There are a couple of things we need to understand first. Are you implementing the switch function in the construction script? It looks like when you execute the switching action the function fails to execute or perhaps you didn’t call it. Instances are to be executed during the beginning of the play and before play but never during the gameplay (keep note).
It can be anything, you can always try to print a string to see if it executes. Also, changing 120+ in real time is better to do just once/one one-time event otherwise you will need a better plan for this.