How do I set a variable on when touching an object?

My idea is that when the player is touching a wall, they'll be able to perform a wall jump. To implement this, I'm using a global variable which, when set at >0, will allow the player to wall jump. The problem I'm having is I can't find a way of dynamically changing the variable based on whether the two objects are colliding. If I set the player to 'on collision with wall' then the variable is stuck at value 1, since I can't find a way to change it back to 0 using another condition, nor can I use an 'else' statement. I tried 'is overlapping with' but that didn't seem to do anything. Anyone got ideas on how I can do this?

All help appreciated!

You can use 'is overlapping with offset'. This enables you to use an else.

When the wall is to the right the offset should be -1, and to the left 1.

To go back to value 0 you can inverse a condition by hitting i on your keyboard

Choose the condition "Is overlapping" wall then hit i.

The action would be set global variable to 0

You can use 'is overlapping with offset'. This enables you to use an else.

When the wall is to the right the offset should be -1, and to the left 1.

This works perfectly and was exactly what I was looking for! Thanks a lot man!

Ok, all solved.