Hello Everyone,

Could someone please help me explain why I get an "Unbound expression" error with this constraint??

I am calculating angles between segments and I just want to set that if the denominator is zero then the angle is 90.

forall(f in Floor){

forall (p in aSegments){

if ((ChangeinX[f][p])== 0)

Angles0[f][p] == 90;

}

}

I have attached the .mod file as well,.

Any assistance rendered will be highly appreciated!

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