How do I add a cool down?

Hello, I have been trying to add a cool down to a game that I have been working on. I would like to add a cool down, so that the player can’t constantly spam when shooting lasers. How would I do that?

It looks ok to me, whats doing wrong with it?

I can still spam the right mouse button. There is no actual cool down, unless I have to change the values?

There must be a dozen ways to achieve it, here’s one:

You sure you not touching Cool Down elsewhere? you also could try using < node and then branch