I need to validate numeric data in a textbox. The entry needs to be 0,1,2,3,4
and nothing else. I'm having a hard time since no entry and zero appear to be the same thing but I do want the zero entered instead of leaving it blank.

I've tried inlist(0,1,2,3,4) but blank is as good as zero to this function.

Ideas?

(vfp7)