APEX

I did a quick seach and didn't see an answer.

I'm very new to ApEx and PL/SQL, so forgive my newbie question.

I want to use the 'PL/SQL Function Body Returning a Boolean' selection in the Read Only Condition Type, because I have several items to check in determining if certain fields are Read Only or Editable.

Will someone be so kind as to give me a short example of code? Doesn't need to be anything fancy. Just some PL/SQL that would be appropriate. If I have a good example I think I can take it from there.

I have a PL/SQL book and it helps, but doesn't have a good example. I have the following code but it's not correct. What am I doing wrong? (I could be way off base.)

BEGIN
IF :P10_BOAT_STATUS = 'F' THEN
TRUE;
ELSE
FALSE;
END IF;
END;

Thanks in advance, Tony