(Not a request-read it) How do I change the sound of a gun with ASSET?

I'm testing some weapons, but the sound is not the one I'm looking for, and on the sound script, you can change the link (The current link has the word "Asset" in it), but every time I change it into a different Audio (That doesn't have the asset code in the link), it doesn't work.

How am I suppose to change the audio of a gun shot with the Asset link?