I have never seen this error before for my whole wick editor life

what is in line 15 in update script

its the own wick editors code and it thinks its wrong
its the if(this.hits(that)){

}

well, if you’re using if(this.hits(that)) {} exactly how it’s given to you, make sure you are swapping that with the name of the object you want to test collision for. the error might have occured because it didn’t know what that is. for example, if you want to test collision on a clip called floor, use if(this.hits(floor)) { blah blah blah }.

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Oh that was the problem Thanks!