STOP for youtube window

Hi,
I must ask again if there is posibility to stop playing youtube sound with a button for the layer if user forget to stop video inside youtube player first before closing the youtube layer.

I have an action for close ( dissapear) youtube window but the sound keeps playing.

I still believe that there is a solution. This code works well but the sound is still ON.
<action name="stopyoutube">
removelayer(youtubevideo);
set(layer[youtubevideo].url,NULL);
stopallsounds(true);
</action>

Hello Klaus,
I awaited with the fear such an answer

Well, I try to find someone to investigate it.

Thanks for your reply.