Custom command - keyboard shortcut for specific simple string (email)

[int-369]

I would like to store my email under the keyboard shortcut so I add a custom command:
copyq: copy("[email protected]") paste()
If I enable this command, I achieve keyboard shortcut input, but I have problems with the usual CopyQ copy/paste functionality because at the pasting step, I get a string from my custom command. It looks like it overrides the regular copied string.

Before that, I had command;
copyq: var time = dateString('yyyy-MM-dd') copy(time) paste()

This one behaves perfectly fine (it paste me current XML date). Where did things go wrong in my first custom command with the email string?

Thanks for the help, kind regards!