How can I find a FamilySymbol through a FamilyInstance Parameter ?

[Bruno_Neves_Pires_Silva]

            I want to insert a FamilyInstance that contains a parameter named 'XPTO.' How do I find the right FamilySymbol since the parameter is in the FamilyInstance, not in the FamilySymbol? The name of the FamilySymbol is not known.

Thank you in advance

[jeremy_tammik]

Filtered element collector to retrieve all family instances, check each one for the required parameter; when the correct instance is found, call its FamilyInstance.Symbol property:

• https://www.revitapidocs.com/2024/4157fff5-cde3-cbb7-1df8-03f77d64712f.htm

[Bruno_Neves_Pires_Silva]

But I don't have any familyInstance inserted yet.

I want to find a FamilySymbol that when is inserted, the result FamilyInstance will have the parameter "XPTO".