thanks george

I am trying to make some realistic movement for some flying bats , so I make them change their pan and tilt randomly and continously , as if they just flying around , and i made their moves look realistic , but i realized something wrong in their movement , so I watched the pan variable to see how does it change and i found it increasing only , it didnt decreasing even for a millisecond (assuming that the randomization changes every frame or sth like that ) so that means that there is no randomization at all
I closed the engine and ran it again a couple of times , but it gives the same result , i forgot to tell you that the same thing happens to the tilt value

I want to know why is that happening ?

and thanks again

ps :thanks sebastian but that wasnt exactly my point