the answer is yes, but the solution will depend on how you exported them.
are you exporting them seperately, or as one object?
seperately:
no problem. just check against each object number (or with 0 as the second object number to arbitrarily get the plain that is being collided with.
as one:
you'll have to write a function that does the following:
1) checks for collision with the object
2) returns a number that indicates the co-ordinates or 'plain number' of the plain that is being hit. if all your plains are the same size, and you know the dimensions of them, this is quite simple.
-= i only do what my rice krispies tell me to do =-