A simple animation problem(i need a little help in dis)
 

hi Guys!
i'v got a problem That I have 2 objects in the scene which are inline with each other on Z-axis.i want an MEL expression that when 1 object approaches the other object in Z-axis and as soon as it touches the other object the other object should become child of this 1
i hope it's easy. I'm upto this problem for 2 days and i could not help it out.I'd appreciate that if some1 of u plztemme the solution............