RUE'S PROFILE

Sorry for starting a new thread so soon after I just made one about another problem. This is a different problem and I don't want to bring it up in another topic. Can anyone solve this problem for me I had it once a while ago but my script got deleted.Basically I am making a quest that you have to change 3 item and it changes to different colors. I want the player to have the exact right color combination but when I add and subtract the variables I keep have too many + or minuses and it doesn't work. For example is you have 1 object blue and one red and another yellow it will unlock a door.
I add +1 to variable when they change it and continue to change it I -1, if they keep going I add +0 to keep the variable from going too high or too low. But when I try to add and subtract for the other objects the math doesn't add up because I might add the variable +0, +1, -1 for another object instead. And for the last one I would do -1 first +2 then -1 or something.However no matter how many trials I tried I can't remember how I made this quest flawless last time. I know there is a way but the math is starting to get annoying and I've been stumped for a few days now.

The problem lies in the fact when they go start changing another object my math fails and it adds up to open the door randomly which I am trying to overcome. Maybe I am not using my cycles and fork conditioning correctly, I'm sure there is a simple solution to it but when you're learning it's hard to just remember how everything works.