[tutorial 067] Jinja calculation for an hidden variable with a potential inaccessible varible

firefox/55-proxy_dns_socks5.yml

@@ -2,3 +2,17 @@
 proxy_dns_socks5:
   description: Use proxy DNS when using SOCKS v5
   default: false
+  disabled:
+    jinja: |
+      {% if socks_version is not defined %}
+      the proxy mode is not manual
+      {% elif socks_version == 'v4' %}
+      socks version is v4
+      {% endif %}
+    params:
+      socks_version:
+        variable: manual.socks_proxy.version
+        propertyerror: false
+    description: |
+      if "firefox.proxy_mode" is not "Manual proxy configuration"
+      or "firefox.manual.socks_proxy.version" is "v4"