SubstractAsync not working

[weak current]

it doesn't substract the void part from the wall, and i don't know why, i've sent the script with the prints in the photo

the error occur at line 72, and yeah i just don't know what the problem is, i've never used SubstractAsync before

[mental gazelle]

why are you using while task.wait(0.01) do

[analog glacier]

while true do
task.wait(0.01)
end

would do the work better imo

[mental gazelle]

of course it would

they're just newgens

[analog glacier]

i wouldn't call them that, but the way he coded that isn't practical imo, but at least it works

[haughty coyote]

** You are now Level 3! **

[mental gazelle]

STOP PINGING MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

[analog glacier]

oh yea i forgot

[weak current]

why would it be better ?

isn't it the same ?

[analog glacier]

no

[weak current]

what's the difference ?

[analog glacier]

efficiency i think

[weak current]

like it run faster ?

[analog glacier]

not in terms of speed

[weak current]

yes speed at which the code is executed

so how fast it run

[analog glacier]

idkk

[weak current]

oh wait nvm

i missread not as no

[analog glacier]

im not talking abt speed

[weak current]

so how is it better then ?

and do you know why substract isn't working ?

[analog glacier]

optimizing maybe