Hi - please use punctuation and make sure you are as clear and intelligible as possible.
I assume you mean something like this:
If you hit spacebar once, it deactives - if you hit it twice (like a double-click) then it activates [ezdac~]. Play around with the [del] values to find a number you feel is satisfactory (150ms does it for me).
There are a million other ways to do it, using [timer], [counter], [metro], [zl] etc etc.