a problem about the Flying Game Example in TGEA 1.7.0

I bought the Flying Game example and put it into the TGEA,but now i got a problem that in the engine code that the ThrowcallBack() function that could not work,so lead to that the callback methods like onTargetNear() and onTargetOutOfReach and etc. that could not be called .I am now use TGEA 1.7.0.Could some one help me to find out the problem.
Thanks a lot.