PhpBB3 BBCodes

Is there such a bbcode that does this:

If Topic Author/Admin/Mod then you see XXX Test

But Else you see This This message is for topic author only.

If not its cool but didnt know if you know of any such things

Thanks,
Steve C

Any help on this?

i haven't answered cause i really don't know how to do it, that might be more of a mod, don't know if it can be done with a bbcode!

Its cool. Yeah it probably would have to be a mod. I currently have a mod Auto Post Reply. Thats why i was hoping for a bbcode. Is there a way i can add or make an if statemant?. Like some how make it something like this: <!-- IF_USER_S_TOPICAUTHOR --> <!-- ELSE --> <!-- ENDIF -->... Just an idea.

Thanks,
Steve C