Newbie. Can't get rollOver to work

Question

Hi,
Using Director 12 trial.
I've been off of Director for 12 years.  I used to know a little Lingo, but I've forgotten most of it.  Came back to Director to do a simple interactive menu that launches different QT movies.  All of the limited scripting I've done so far is working, except for rollOver command.
Nothing I do will get a rollOver response.  So simple, but can't figure out why it's not working.
simple example...
>>
on exitFrame me
     go to frame
     if rollOver(12) then beep
     else nothing
end if
end
<<
lIke I said, my other scripts work fine.  But rollOver isn't working.  I'm trying to get buttons to highlight as they're rolled over.
Robert N.

Answer 1

on exitFrame me
  if rollOver(12) then
    beep
  else
    nothing
  end if
  go to the frame
end
examples of behavior applied on a sprite //
Property pMe
Property pMeColor
Property pMeRollOverColor
on beginSprite me
  pMe = sprite(me.spritenum)
  pMeColor = 10 (grey)
  pMeRollOverColor = 0 (white)
  sprite(pMe).forecolor = pMeColor
  end
on exitFrame me
  if  rollover (pMe) then
    sprite(pMe).forecolor = pMeRollOverColor
  else
    sprite(pMe).forecolor = pMeColor 
  end if
go to the frame
end
on mouseUp (me)
--whatever
end
Property pMe
Property pOrigMember
Property pRollOverMember
on beginSprite me
pMe = sprite(me.spritenum)
pOrigMember = member "black" -- bitmap Castmember
pRollOverMember = member "white"  -- bitmap Castmember
sprite(pMe).member = pOrigMember
end
on exitFrame me
  if  rollover (pMe) then
   sprite(pMe).member = pRollOverMember
  else
    sprite(pMe).member = pOrigMember
  end if
  go to the frame
end
on mouseUp (me)
--whatever
end