can you overturn a call?

[JohnBark]

no, the ball had been in the FC. my partner wasn't counting at all until the losing coach complained. he didn't count at all the whole game until then. and then for some reason, once he started he counted 5 and blew the whistle. the coach had a very, very good point. and the coach, darn i say, was absolutely right. the player didn't hold or dribble the ball for 5 seconds.

i only wanted to know, if i could have or should have overturned the call. i didn't. but, for future knowledge, was just curious, if i would be correct in overturning that call. and i apparently did the correct thing in NOT overturning the call. i just want to get it right.

thanks!