For now i solved using a clicking program.
This program can click a portion of the screen, after setting the coordinates to click, and has an hotkey to run.
Easyuo opened on the tab of the main script, and the control-script run :
key S SHIFT
Shift-S is the hotkey of the clicking program. I set it with the coordinates of the pause button of easyuo.
So i can directly run a very little script to immediatly pause the main script without put lots of control in it.
This is a rough solution, but at the moment is the only i was able to make work

I was also thinking make a little application to run by a "call" of easyuo, but i wasn' t able to compile it.
If i find an easy way to pause scripts i' ll post it.