Copying data to a parameter created in a schedule

I’m trying to copy data into an instance parameter created in a schedule, is this even possible?

Schedule%20Parameter

What I’m trying to do is copy the description of a material, assigned to a door, to a parameter added to a schedule. I can get the data I want to copy, but I can’t add it to the schedule as I can’t access the parameter I want to copy to.

I know I can do this by adding a project parameter, but it would be adding extra parameters to the project.

It is! That makes life a lot simpler…

Thanks!