Hi, I have set up a layout with pop-up menu which is conditional value list.
There are 2 fields in the layout, namely a and b.
when a is selected, the related value of b could be select, but if a is empty, when b is selected, no value is defined is shown.
is that possible to pop up a message before the user click b when a is empty? If I want to escape the message no value is defined, is there anything I could do?
I am using filemaker 17.