How to trigger an action after page stops loading with `Open URL` action?

I want to do something like this

But I need to trigger the move mouse action only when page stops loading. I can try do:

But 3 seconds is unreliable, sometimes it takes more, sometimes less.

How to trigger the move mouse only when page is loaded?

There are two built-in "Wait for page to finish loading" actions—one for Safari, one for Chrome—would those work?

If not, is there a button that becomes active only after the page has loaded? Or a menu bar menu item that does the same? There are actions that can watch for those things, too.

-rob.

cool this works

thanks