are you sure you used named controls in formula and not item properties?
I was using item properties, whoops did not know to use named controls. Thanks that solved the days calculation! I did run into another issue though, where I have another issue where for my nights calculation, I am using the formula here,
but my variable of Days in not in the named controls, only the item properties. I have Days as a column in my list and first initialize it in the calculated value right before nights.