Hello, Lion! Like Bubble, that’s all a bit too much for me, but I believe that we can join forces! 
If you use the condition “Trigger once” with “Repeat for each instance” the event will be true just only one time. So, if it happens in one instance, it won’t happen in any instances anymore!
You need change your events of “Repeat for each instance” removing “trigger once” and putting another condition that makes it true only once. Using your first event like an example you can just remove the trigger once because your action already change the variable to 1 making your condition false.
I don’t know if these changes will be enough to make your code work like you want, but I know they will be necessary.