Easy math issue for newbie

Just want to have a number count down by minutes.

Say 90 appears in a field and subtracts 1 from it every minute.

Thanks for any help.

I've added a working example below. I've added comments to hopefully let you understand what's going on, so you can use the logic in other scripting;)

Counter.jzml

Amazing thank you.

I have a couple more tweaks that I can't figure out cuz I'm not a programmer.

Can it turn red when it is below zero, have a minus sign by it and continue to count down?

I assume I can remotely via OSC from QLab send a "time" variable to change the 90 to some other time.

So much appreciate the work you did.

If you remove the if statement and everything in it, it will get passed zero with a negative.

For the color you can just use a same like if statement but use "setattribute(Object, 'color', ####)'. If you check the lemur user guide I'm sure you can figure it out. Let me know if you succeed.