i tried to find information about it, but i'm still not shure how it works.

I tried to "tag" a button by entering "TEST" (no quotes) into "ProntoScript Name" under "Actions - PS".
The ActionList of that button contains an IR code.

I tagged the page by entering "TESTPAGE" into "ProntoScript Name" under "Page Properties - Advanced".

I created another button and entered the ProntoScript: page("TESTPAGE").widget("TEST").executeActions();
but nothing happens. When i press the button (TEST) itself, the code is being transmitted.

Try using this

CF.widget("BUTTON" , "PAGE" , "DEVICE").executeActions();

BUTTON is the prontoscript name of your button
PAGE is the prontoscript name of the page that button is on
DEVICE is the prontoscript name of the device that contains the page

At first i thought even that isn't working, then i found the "problem": The remote doesn't show the "flashing" symbol in the upper left corner of the screen when the action is executed.

Thank you.