How to make formulas with Nested Family Type Parameters

[pe_simon]

Hi, I want the nominal diameter = 200, the Blot_Selection  Nut : M20-200mmm

When nominal diameter = 300, auto change the Blot_Selection  Nut : M24-300mmm.

Can it make the formula for auto selection? thanks.

[curtisridenour]

[curtisridenour]

you need to add two more Family Type parameters and then create an if statement to choose between them.