I have just tried the code in a test game and it worked fine. Check you copied everything over correctly.
its saying “attempt to perform arithmetic (unm) on nil”
for this line : " for i = num1,num2,-inc do"
Please post a screenshot of the whole module including the function and for loop.
show the script including line numbers and also show the error code, then I know what line it is
is TimerClone > Frame > Time a TextLabel or TextButton? if not, that might be the problem