Overwrite Value of "" or nothing

I have a schedule of generic annotations to inform material tagging in Revit. I have pulled type parameters from the generic annotations to excel in order to write them and push back from excel. Works great except I want some of the values to be blank. Problem is if there is already a text value in the type parameter I cannot make it read as blank unless I put an “NA” or “0” Value in to overwrite it.

How do you clear a family parameter back to zero?

I don’t know that you can… for sure not without an API call. I’d start there and see if you can feed the parameter a null value. I recently found out that to reset a Scope Box of a view to none you feed an ElementId of -1. Might be something similar for blank parameters.

Curious how you make out so let us know if you find a solution.