Revit Type Library formula comparison against family type

Revit Type Library formula comparison against family type

If I have a property in a Revit Family Type Library that is a Family Type
is there a way I can reference the type that is selected in the property
for use in formulas.
Say for example I have a parameter "Bolt Washer (default)" parameter name
and the value I have set in the Value field is "Washer : 50x50x3".
I would like to be able to have a value of a another parameter in the type
that is changed based on the selected value in the Value field of the Bolt
Washer parameter.
For example:
IF (Bolt Washer = "50x50x3", 3, IF(Bolt Washer = "65x65x6", 6, 10))