Can't fill in Revit.wall type mark parameter via list

Hello, I’m trying to use a list to fill in type mark of walls in Revit, I did get it to work once, but the number shifted by 1 (WF01 in wall type WF02, WF02 in wall type WF03). So, I’m trying to do it again, but it’s not working.

Hi @Choun_Channe

Use the following trick

I used element type, but I also filter it afterward, idk if that is what causing the issue. I need a list of wall type that would match with the list of type mark.

Its a type parameter. You need to use type as an element input to assign the values.