cool thanks, for some reason, i am not sure why, i tried yours, and still didn't work.... then I found this when i right-click the child node: Copy Node Path
and added the .text like yours, and it worked... weird weird thing is... i did this before, were i copied the path like that, and tried it... and still didn't work, not sure what is the difference between yesterday and today.... but its working... big thank you :)
so it worked as such, I right click, copy node path, then added .text
$HBoxContainer/VBoxContainer/HBoxContainer/VBoxContainer/InputSound.text