I think it’s better that we start with the basics.
If you are running into trouble - deconstruct, simplify.
That’s what I always do.
First. Get the function to work. And have it only do one node, make it destroy itself first.
Once you have THAT done and working, then start adding other nodes.
In the particular screenshot, your sound node doesn’t have a wire going into it, so it will never fire.
I can’t comment on the rest of it, as from the screenshot it seems right, but I don’t know if the rest of the project is correctly set up.
Once you have the function triggering correctly, then start another topic on another particular subject that you need help with.