Thanks alot! But I wuold like it to be [ot], is that possible without editng funcions_bbcodeparse.php?
Thanks again
Edit - the codes that you gave me didnt work, nothing displays eevn if the field is blank now
That's what the condition you posted did, if it's blank, it shouldn't show up. If you want to reverse this, you'd have to add a ! before the $ in the condition to mean if it is blank, show the code.
I know you're going to have to edit functions_bbcodeparse to use [ot], but it probably wouldn't be that bad of an edit.