This does not do everything I need, but I think it should work but does not:
[frm-condition source=frm-math content="[2874] - [2873]" less_than=0]"0"[/frm-condition]
2874 & 2873 are two number fields and the frm-condition shortcode is in another number field on the same form. If I enter 2 numbers whose difference would be less than zero, nothing happens. The field with the frm-condition shortcode is blank. I have never been able to get this particular shortcode to work in any forms.
-Jane
It seems the code format thing does not work. This is the code that should be in the grey box above:
[frm-condition source=frm-math content="[2874] - [2873]" less_than=0]"0"[/frm-condition]