Good day.

I've been trying to use a global variable ($$GVar) in a field definition calculation to no avail. I thought this was possible but might be confusing in with the Let function.

When I test in Data Viewer, the calc works, but when it's in the field definition calc, nothing happens.

Just need some verification.

Thanks,

M

If the calculation field defining the variable is evaluated, the variable is created and assigned a value (as you can see in Data Viewer). However, merely evaluating a calculation does not necessarily trigger the evaluation of another (is your first field referenced in the second calculation?), or a screen refresh.

Global variables do not have the same "triggering effect" that field references have. FileMaker will evaluate most evaluations that have a field reference of the changed field. This does not apply to any kind of variable. Although, a screen refresh will cause a calculation to re-evaluate if the field is currently on-screen, regardless of the field references.