property timer value Coming back to this thread: countdown timer

I want to check the time property and set a new scene when it reaches 0.

What should I put in the Value box of a Property-equal sensor to check for when the timer reaches 0? I tried 0, 00:00, some other formats although I think I can't really put expressions there and none of them worked.

Maybe this textObject.text = '{:%M:%S}'.format(time) is something that I can't play with in the Value box of the Property and I need to go through python, but I wonder if there is a simple logic brick solution.

These are the logic bricks.
As the timer property provides a float value, you need to check if the value is "equal or above zero". Since Blender 2.74 the property sensor has according modes. If you use an older version, you can use the interval mode

The value to check against is -> 0 or 0.0 it does not matter which one.