Change parameter of elements into family

[Yna_Db]

Do you mean this?

Change parameter values in multiple nested families

Dear BIMmers, Any ideas here? Please help I have multiple nested families which need to change in some 750 odd parent families. Its a standard content for a client. Example: I have A, B, C and D nested in X,Y,Z… and so on loaded in 750 families. A, B, C and D have a specific code to their type. Which I need to update in all the parent families (X,Y,Z…750 families) Any quick way to this using Dynamo or some plugin? Any help is highly appreciated Thanks…