diff --git a/locale/fr/LC_MESSAGES/tiramisu.po b/locale/fr/LC_MESSAGES/tiramisu.po
index dfe63cd..4aea756 100644
--- a/locale/fr/LC_MESSAGES/tiramisu.po
+++ b/locale/fr/LC_MESSAGES/tiramisu.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Tiramisu\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2025-04-09 08:14+0200\n"
+"POT-Creation-Date: 2025-04-29 23:01+0200\n"
 "PO-Revision-Date: \n"
 "Last-Translator: Emmanuel Garette <egarette@cadoles.com>\n"
 "Language-Team: Tiramisu's team <egarette@cadoles.com>\n"
@@ -123,89 +123,93 @@ msgid "do not use unrestraint, nowarnings or forcepermissive together"
 msgstr ""
 "il ne faut pas utiliser unrestraint, nowarnings ou forcepermissive ensemble"
 
-#: tiramisu/autolib.py:80
+#: tiramisu/autolib.py:81
 msgid "args in params must be a tuple"
 msgstr "args dans params doit être un tuple"
 
-#: tiramisu/autolib.py:83 tiramisu/autolib.py:88
+#: tiramisu/autolib.py:84 tiramisu/autolib.py:89
 msgid "arg in params must be a Param"
 msgstr "arg dans params doit être un Param"
 
-#: tiramisu/autolib.py:85
+#: tiramisu/autolib.py:86
 msgid "kwargs in params must be a dict"
 msgstr "kwargs dans params doit être un dict"
 
-#: tiramisu/autolib.py:113
+#: tiramisu/autolib.py:114
 msgid "paramoption needs an option not {}"
 msgstr "paramoption doit être une option pas {0}"
 
-#: tiramisu/autolib.py:119
+#: tiramisu/autolib.py:120
 msgid "param must have a boolean not a {} for notraisepropertyerror"
 msgstr "param doit avoir un booléan pas un {} pour notraisepropertyerror"
 
-#: tiramisu/autolib.py:122
+#: tiramisu/autolib.py:123
 msgid "param must have a boolean not a {} for raisepropertyerror"
 msgstr "param doit avoir un booléan pas un {} pour raisepropertyerror"
 
-#: tiramisu/autolib.py:151
+#: tiramisu/autolib.py:152
 msgid "identifiers in ParamDynOption must be a list, not {0}"
 msgstr ""
 "les identifiants d'un ParamDynOption doivent être une liste, donc pas {0}"
 
-#: tiramisu/autolib.py:155
+#: tiramisu/autolib.py:156
 msgid "optional in ParamDynOption must be a boolean, not {0}"
 msgstr ""
 "le paramètre optional dans ParamDynOption doit être un booléen, pas {0}"
 
-#: tiramisu/autolib.py:206
+#: tiramisu/autolib.py:207
 msgid "cannot add option in information after creating config"
 msgstr ""
 "ne peut ajouter une option dans une information après la création de la "
 "configuration"
 
-#: tiramisu/autolib.py:208
+#: tiramisu/autolib.py:209
 msgid "cannot redefine option in information"
 msgstr "on ne peu pas redéfinir une option dans une information"
 
-#: tiramisu/autolib.py:212
+#: tiramisu/autolib.py:213
 msgid "option in ParamInformation cannot be a symlinkoption"
 msgstr "l'option dans ParamInformation ne peut pas être un symlinkoption"
 
-#: tiramisu/autolib.py:215
+#: tiramisu/autolib.py:216
 msgid "option in ParamInformation cannot be a follower"
 msgstr "l'option dans ParamInformation ne peut pas être suiveuse"
 
-#: tiramisu/autolib.py:218
+#: tiramisu/autolib.py:219
 msgid "option in ParamInformation cannot be a dynamic option"
 msgstr "l'option dans ParamInformation ne peut pas être une option dynamique"
 
-#: tiramisu/autolib.py:279
+#: tiramisu/autolib.py:280
 msgid "first argument ({0}) must be a function"
 msgstr "le premier argument ({0}) doit être une fonction"
 
-#: tiramisu/autolib.py:283
+#: tiramisu/autolib.py:284
 msgid "help_function ({0}) must be a function"
 msgstr "help_function ({0}) doit être une fonction"
 
-#: tiramisu/autolib.py:452 tiramisu/autolib.py:514
-msgid "unable to carry out a calculation for {}, {}"
-msgstr "impossible d'effectuer le calcul pour {}, {}"
-
-#: tiramisu/autolib.py:461 tiramisu/autolib.py:521
+#: tiramisu/autolib.py:455 tiramisu/autolib.py:503
 msgid "the option {0} is used in a calculation but is invalid ({1})"
 msgstr "l'option {0} est utilisé dans un calcul mais est invalide ({1})"
 
-#: tiramisu/autolib.py:477 tiramisu/autolib.py:535 tiramisu/autolib.py:584
+#: tiramisu/autolib.py:467 tiramisu/autolib.py:515 tiramisu/autolib.py:554
 msgid "unable to get value for calculating {0}, {1}"
 msgstr "impossible de trouver la valeur pour calculer {0}, {1}"
 
-#: tiramisu/autolib.py:601
+#: tiramisu/autolib.py:499
+msgid "unable to carry out a calculation for {0}, {1}"
+msgstr "impossible d'effectuer le calcul pour {0}, {1}"
+
+#: tiramisu/autolib.py:535
+msgid "cannot find information for {0}, {1} is a dynamic option"
+msgstr "ne peut trouver l'information pour {0}, {1} est une option dynamique"
+
+#: tiramisu/autolib.py:564
 msgid "option {0} is not a dynoptiondescription or in a dynoptiondescription"
 msgstr ""
 "l'option {0} n'est pas une dynoptiondescription ou n'est pas dans une "
 "dynoptiondescription"
 
-#: tiramisu/autolib.py:687
+#: tiramisu/autolib.py:650
 msgid ""
 "cannot calculate arguments for \"{0}\", cannot find dynamic variable \"{1}\" "
 "with identifier \"{2}\", list of valid identifiers: {3}"
@@ -214,7 +218,12 @@ msgstr ""
 "dynamique \"{1}\" avec l'identifiant \"{2}\", voici la liste des "
 "identifiants valables : {3}"
 
-#: tiramisu/autolib.py:866
+#: tiramisu/autolib.py:754
+msgid "the follower {0} must have index in carry_out_calculation!"
+msgstr ""
+"la variable suiveuse {0} doit avoir un index dans carry_out_calculation!"
+
+#: tiramisu/autolib.py:826
 msgid ""
 "the \"{}\" function with positional arguments \"{}\" and keyword arguments "
 "\"{}\" must not return a list (\"{}\") for the follower option {}"
@@ -223,7 +232,7 @@ msgstr ""
 "nommés \"{}\" ne doit pas retourner une liste (\"{}\") pour l'option "
 "suiveuse {}"
 
-#: tiramisu/autolib.py:881
+#: tiramisu/autolib.py:841
 msgid ""
 "the \"{}\" function must not return a list (\"{}\") for the follower option "
 "{}"
@@ -231,17 +240,17 @@ msgstr ""
 "la fonction \"{}\" ne doit pas retourner une liste (\"{}\") pour l'option "
 "suiveuse {}"
 
-#: tiramisu/autolib.py:922
+#: tiramisu/autolib.py:882
 msgid ""
-"unexpected error \"{0}\" in function \"{1}\" with arguments \"{3}\" and "
-"\"{4}\" for option {2}"
+"unexpected error \"{1}\" in function \"{2}\" with arguments \"{3}\" and "
+"\"{4}\" for option {0}"
 msgstr ""
-"erreur inattendue \"{0}\" dans la fonction \"{1}\" avec les arguments "
-"\"{3}\" et \"{4}\" pour l'option {2}"
+"erreur inattendue \"{1}\" dans la fonction \"{2}\" avec les arguments "
+"\"{3}\" et \"{4}\" pour l'option {0}"
 
-#: tiramisu/autolib.py:933
-msgid "unexpected error \"{0}\" in function \"{1}\" for option {2}"
-msgstr "erreur inattendue \"{0}\" dans la fonction \"{1}\" pour l'option {2}"
+#: tiramisu/autolib.py:891
+msgid "unexpected error \"{1}\" in function \"{2}\" for option {0}"
+msgstr "erreur inattendue \"{1}\" dans la fonction \"{2}\" pour l'option {0}"
 
 #: tiramisu/config.py:420
 msgid ""
@@ -393,21 +402,21 @@ msgid "invalid value"
 msgstr "valeur invalide"
 
 #: tiramisu/error.py:207
-msgid "attention, \"{0}\" could be an invalid {1} for \"{2}\""
-msgstr "attention, \"{0}\" peut être un {1} invalide pour \"{2}\""
+msgid "attention, \"{0}\" could be an invalid {1} for {2}"
+msgstr "attention, \"{0}\" peut être un {1} invalide pour {2}"
 
 #: tiramisu/error.py:209
-msgid "attention, \"{0}\" could be an invalid {1} for \"{2}\" at index \"{3}\""
+msgid "attention, \"{0}\" could be an invalid {1} for {2} at index \"{3}\""
 msgstr ""
-"attention, \"{0}\" peut être un {1} invalide pour \"{2}\" à l'index \"{3}\""
+"attention, \"{0}\" peut être un {1} invalide pour {2} à l'index \"{3}\""
 
 #: tiramisu/error.py:228 tiramisu/error.py:239
-msgid "\"{0}\" is an invalid {1} for \"{2}\""
-msgstr "\"{0}\" est une valeur invalide pour l'option \"{2}\" de type {1}"
+msgid "\"{0}\" is an invalid {1} for {2}"
+msgstr "\"{0}\" est une valeur invalide pour l'option {2} de type {1}"
 
 #: tiramisu/error.py:230
-msgid "\"{0}\" is an invalid {1} for \"{2}\" at index \"{3}\""
-msgstr "\"{0}\" est un {1} invalide pour \"{2}\" à l'index \"{3}\""
+msgid "\"{0}\" is an invalid {1} for {2} at index \"{3}\""
+msgstr "\"{0}\" est un {1} invalide pour {2} à l'index \"{3}\""
 
 #: tiramisu/function.py:65
 msgid "network \"{0}\" ({1}) does not match with this netmask"
@@ -730,10 +739,10 @@ msgstr "une option leadership \"{0}\" ne devrait pas avoir de sous-groupe"
 
 #: tiramisu/option/leadership.py:114
 msgid ""
-"only multi option allowed in leadership {0} but option {1} is not a multi"
+"only multi option are allowed in leadership {0} but option {1} is not a multi"
 msgstr ""
-"seules des options multiples sont autorisées dans l'option leadership "
-"\"{0}\" alors que l'option \"{1}\" n'est pas une option multiple"
+"seules des options multiples sont autorisées dans l'option leadership {0} "
+"alors que l'option {1} n'est pas une option multiple"
 
 #: tiramisu/option/leadership.py:141
 msgid "not allowed default value for follower option {0} in leadership {1}"
@@ -1021,6 +1030,9 @@ msgstr ""
 msgid "information's item not found \"{}\""
 msgstr "l'information de l'objet ne sont pas trouvé \"{}\""
 
+#~ msgid "unable to unable to get value for calculating {0}, {1}"
+#~ msgstr "impossible de trouver la valeur pour calculer {0}, {1}"
+
 #~ msgid ""
 #~ "unknown option \"{0}\" in root optiondescription (it's a dynamic option)"
 #~ msgstr ""
diff --git a/locale/tiramisu.pot b/locale/tiramisu.pot
index 1322953..435fe8d 100644
--- a/locale/tiramisu.pot
+++ b/locale/tiramisu.pot
@@ -5,7 +5,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
-"POT-Creation-Date: 2025-04-09 08:16+0200\n"
+"POT-Creation-Date: 2025-04-29 23:01+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -111,100 +111,108 @@ msgstr ""
 msgid "do not use unrestraint, nowarnings or forcepermissive together"
 msgstr ""
 
-#: tiramisu/autolib.py:80
+#: tiramisu/autolib.py:81
 msgid "args in params must be a tuple"
 msgstr ""
 
-#: tiramisu/autolib.py:83 tiramisu/autolib.py:88
+#: tiramisu/autolib.py:84 tiramisu/autolib.py:89
 msgid "arg in params must be a Param"
 msgstr ""
 
-#: tiramisu/autolib.py:85
+#: tiramisu/autolib.py:86
 msgid "kwargs in params must be a dict"
 msgstr ""
 
-#: tiramisu/autolib.py:113
+#: tiramisu/autolib.py:114
 msgid "paramoption needs an option not {}"
 msgstr ""
 
-#: tiramisu/autolib.py:119
+#: tiramisu/autolib.py:120
 msgid "param must have a boolean not a {} for notraisepropertyerror"
 msgstr ""
 
-#: tiramisu/autolib.py:122
+#: tiramisu/autolib.py:123
 msgid "param must have a boolean not a {} for raisepropertyerror"
 msgstr ""
 
-#: tiramisu/autolib.py:151
+#: tiramisu/autolib.py:152
 msgid "identifiers in ParamDynOption must be a list, not {0}"
 msgstr ""
 
-#: tiramisu/autolib.py:155
+#: tiramisu/autolib.py:156
 msgid "optional in ParamDynOption must be a boolean, not {0}"
 msgstr ""
 
-#: tiramisu/autolib.py:206
+#: tiramisu/autolib.py:207
 msgid "cannot add option in information after creating config"
 msgstr ""
 
-#: tiramisu/autolib.py:208
+#: tiramisu/autolib.py:209
 msgid "cannot redefine option in information"
 msgstr ""
 
-#: tiramisu/autolib.py:212
+#: tiramisu/autolib.py:213
 msgid "option in ParamInformation cannot be a symlinkoption"
 msgstr ""
 
-#: tiramisu/autolib.py:215
+#: tiramisu/autolib.py:216
 msgid "option in ParamInformation cannot be a follower"
 msgstr ""
 
-#: tiramisu/autolib.py:218
+#: tiramisu/autolib.py:219
 msgid "option in ParamInformation cannot be a dynamic option"
 msgstr ""
 
-#: tiramisu/autolib.py:279
+#: tiramisu/autolib.py:280
 msgid "first argument ({0}) must be a function"
 msgstr ""
 
-#: tiramisu/autolib.py:283
+#: tiramisu/autolib.py:284
 msgid "help_function ({0}) must be a function"
 msgstr ""
 
-#: tiramisu/autolib.py:452 tiramisu/autolib.py:514
-msgid "unable to carry out a calculation for {}, {}"
-msgstr ""
-
-#: tiramisu/autolib.py:461 tiramisu/autolib.py:521
+#: tiramisu/autolib.py:455 tiramisu/autolib.py:503
 msgid "the option {0} is used in a calculation but is invalid ({1})"
 msgstr ""
 
-#: tiramisu/autolib.py:477 tiramisu/autolib.py:535 tiramisu/autolib.py:584
+#: tiramisu/autolib.py:467 tiramisu/autolib.py:515 tiramisu/autolib.py:554
 msgid "unable to get value for calculating {0}, {1}"
 msgstr ""
 
-#: tiramisu/autolib.py:601
+#: tiramisu/autolib.py:499
+msgid "unable to carry out a calculation for {0}, {1}"
+msgstr ""
+
+#: tiramisu/autolib.py:535
+msgid "cannot find information for {0}, {1} is a dynamic option"
+msgstr ""
+
+#: tiramisu/autolib.py:564
 msgid "option {0} is not a dynoptiondescription or in a dynoptiondescription"
 msgstr ""
 
-#: tiramisu/autolib.py:687
+#: tiramisu/autolib.py:650
 msgid "cannot calculate arguments for \"{0}\", cannot find dynamic variable \"{1}\" with identifier \"{2}\", list of valid identifiers: {3}"
 msgstr ""
 
-#: tiramisu/autolib.py:866
+#: tiramisu/autolib.py:754
+msgid "the follower {0} must have index in carry_out_calculation!"
+msgstr ""
+
+#: tiramisu/autolib.py:826
 msgid "the \"{}\" function with positional arguments \"{}\" and keyword arguments \"{}\" must not return a list (\"{}\") for the follower option {}"
 msgstr ""
 
-#: tiramisu/autolib.py:881
+#: tiramisu/autolib.py:841
 msgid "the \"{}\" function must not return a list (\"{}\") for the follower option {}"
 msgstr ""
 
-#: tiramisu/autolib.py:922
-msgid "unexpected error \"{0}\" in function \"{1}\" with arguments \"{3}\" and \"{4}\" for option {2}"
+#: tiramisu/autolib.py:882
+msgid "unexpected error \"{1}\" in function \"{2}\" with arguments \"{3}\" and \"{4}\" for option {0}"
 msgstr ""
 
-#: tiramisu/autolib.py:933
-msgid "unexpected error \"{0}\" in function \"{1}\" for option {2}"
+#: tiramisu/autolib.py:891
+msgid "unexpected error \"{1}\" in function \"{2}\" for option {0}"
 msgstr ""
 
 #: tiramisu/config.py:420
@@ -340,19 +348,19 @@ msgid "invalid value"
 msgstr ""
 
 #: tiramisu/error.py:207
-msgid "attention, \"{0}\" could be an invalid {1} for \"{2}\""
+msgid "attention, \"{0}\" could be an invalid {1} for {2}"
 msgstr ""
 
 #: tiramisu/error.py:209
-msgid "attention, \"{0}\" could be an invalid {1} for \"{2}\" at index \"{3}\""
+msgid "attention, \"{0}\" could be an invalid {1} for {2} at index \"{3}\""
 msgstr ""
 
 #: tiramisu/error.py:228 tiramisu/error.py:239
-msgid "\"{0}\" is an invalid {1} for \"{2}\""
+msgid "\"{0}\" is an invalid {1} for {2}"
 msgstr ""
 
 #: tiramisu/error.py:230
-msgid "\"{0}\" is an invalid {1} for \"{2}\" at index \"{3}\""
+msgid "\"{0}\" is an invalid {1} for {2} at index \"{3}\""
 msgstr ""
 
 #: tiramisu/function.py:65
@@ -633,7 +641,7 @@ msgid "leadership {0} shall not have a subgroup"
 msgstr ""
 
 #: tiramisu/option/leadership.py:114
-msgid "only multi option allowed in leadership {0} but option {1} is not a multi"
+msgid "only multi option are allowed in leadership {0} but option {1} is not a multi"
 msgstr ""
 
 #: tiramisu/option/leadership.py:141
diff --git a/tiramisu/autolib.py b/tiramisu/autolib.py
index ebe3cfc..281e0c9 100644
--- a/tiramisu/autolib.py
+++ b/tiramisu/autolib.py
@@ -512,7 +512,7 @@ def manager_callback(
                     ["configerror"],
                     config_bag.context.get_settings(),
                 )
-            errors.raise_carry_out_calculation_error(subconfig, _("unable to unable to get value for calculating {0}, {1}"), err, option=option)
+            errors.raise_carry_out_calculation_error(subconfig, _("unable to get value for calculating {0}, {1}"), err, option=option)
         return subsubconfig
 
     if isinstance(param, ParamValue):
diff --git a/tiramisu/locale/fr/LC_MESSAGES/tiramisu.mo b/tiramisu/locale/fr/LC_MESSAGES/tiramisu.mo
index 9c16744..fa0edad 100644
Binary files a/tiramisu/locale/fr/LC_MESSAGES/tiramisu.mo and b/tiramisu/locale/fr/LC_MESSAGES/tiramisu.mo differ