Difficulty in repeating a calculation in a solve block

[FDS]

I have a problem with a solve block constructed in MC15. As long as I use a single input variable A the sheet works fine. However if I want to calculate the values for a changing chamber length it does not work. I assume it is something simple but I do not "see" it at this moment. Any help would be appreciated.

[Fred_Kohlhepp · Accepted solution]

The solve block can't work vectorized because the answer changes with area.  Turn the solve block into a function

[FDS]

Fred, thanks a million!