I am trying to add a DIM Token for "Toe Kick Space".

Cant figure out how to add the "Thickness Door" to the formula. I am using the W!Door_To_Cabinet_Gap Prompt and it works as you see in the Screen Shot.

I was able to add the prompt in W!: However the formula to add the "Thickness Door" is not working, it has an end result of Zero in the Formula.

I have also tried L!Thickness_Door & G!Thickness_Door with no luck

Any help to add the proper Prompt is Much APPRECIATED.