That code sets the value of JF13 to a single space, which is not allowed in a numeric field. If you want the field to be blank, use "" (empty string) instead.
Thank you so much for your response!!
Forgive me for my lack of knowledge - but where exactly would I add that in the script?
I tried it like this:
if(Number(this.getField("ck4").value) > 0) this.getField("JF13").value = Number(this.getField("FL019").value); else this.getField("JF13").value = ""(empty string);
And I got an error saying I was missing a parenthesis. Should it go somewhere else or am I completely off?
Just include the two quote characters, not the parenthetical comment.
Perfect! It worked! Thank you so much!!