Drive family selection parameter from another parameter within nested family

[B4-DavidG]

Hi everyone!

I'm trying to figure out the formula that will drive the type selection parameter of a nested family from a text parameter in the host family. Please see the snip below:

So if the b4_ConstructionType = TYPE I - V, then the b4_ConstructionTypeSelection should select 'TYPE I - V' type of nested family as well. I can articulate this in English but not so much in Revitish haha

The reason I'm trying to do this is to link the text parameter to the global parameter of the projects where this family will be used. Unfortunately, Revit doesn't support linking type selection parameters to global parameters in the project and I'm trying to create a mediator parameter.

Thanks everyone in advance and have a happy Friday!

[barthbradley]

Make the Nested Family Shared and manipulate it directly in the Project.  

[ToanDN]

You already have the Family type parameter to choose a table from a dropdown list.  Why do you need a text parameter to drive the selector?

What would the global parameter do in the project?

What are all those visibility parameters for?  If they are for turning on/off the nested tables then no, the type selector parameter already takes care of this task.

[RDAOU · Accepted solution]

@B4-DavidG 

Not sure what is the final purpose of such a family so I will stick to the question as is

1. purely in Revit, you cannot use text parameters/values in formulas...so NO you cannot control the Family<Type> using the value you type in the global parameter.
2. Using Dynamo, yes you can. In dynamo you can evaluate and compare string