Detecting mpeg finished playing with ActiveX

[ShaolinWood webforumsuser@macromedia.com]

How do I detect if the Mpeg has played through using the ActiveX plugin in Director 8.5?
I tried using the following code wich I usually use but it now gives errors...

on exitFrame me
myMember = sprite(3).member
myDuration = member("thempeg").duration
myMovietime = sprite(3).movieTime
if myDuration > myMovietime then
go to the frame
else
go to the frame + 1
end if
end

Thanks for any help