thx peblo. i really do appreciate this, i have now remade the enemy AI several times and it wont work either way. I think the problem is that the enemy colliosion detedtors have to detect a qualifier. If this wasnt the case i think i could do it.
The reason for this is that alot of the tiles are animated and have to be Active objects, all these objects are quilified "Neutral". This stops me from doing the code in the object behaviours (which would solve the problem) so it all has to be done from the main coding screen.
Again this is a real help and if anyone feels like doing a quick Grid based enemy AI i would be extremly appreciative and credit will be given without a doubt as this will allow me to finish my project.