Trying to fix my roblox battlegrounds script

[regal copper]

i have a server script for a battlegrounds game that im working on, i have it so if you hold left mouse and space at the same time, once you punch four times you do a uppercut. For some reason it works inconsistently with dummy rigs and never works with real players

this is the relavant part of my script

and this is a demostration of what is happening