# A dynamic family > **🛈 Informations** > > **dyn*a***\ > **dyn*b***\ > This family builds families dynamically.\ > `standard`\ > **Identifiers**: > - a > - b | Variable                                                                           | Description                                                                        | |------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | **dyn*a*.var**
**dyn*b*.var**
`string` `standard` `mandatory` | A variable inside dynamic family.
**Default**: val |