yes/no parameter to control pipe size

[Anonymous]

is it possible to use a yes/no parameter to return a pipe connector instance parameter as either the true or false?

For example if the yes/no parameter is ticked then return the pipe size connected to that connector in the project, and if unticked then return the value of another parameter.

diameter = If(Yes, diameter, diameter 1).

what I'm trying to achieve is a tee with one of the connectors being pipe size if the yes/no parameter is ticked and being the same value as another connector if unticked.

Or can anyone give me a different work around for what i'm trying to achieve?

[Secttor]

Hi @Anonymous

Seems that Revit 2017 doesn't want to change the connector size once it's attached to a pipe (Pipe Accessories - Breaks Into). It takes the pipe size whatever you want to change with a Y/N parameter. 

But the connector will take the pipe size if all connector-parameters are on instance for your tee. After the pipe is drawn..no! I don't see a reason for doing without resizing the pipe instead of the connector, you want to use reducers?