Kelder is right. Though one thing we can do instead of using $chr(35) is to not evaluate it.
Without $chr(35)
//echo -a $remove($chan,$(#,0))
//echo -a $remove(#channel,$(#,0))
With $chr(35)
//echo -a $remove($chan,$chr(35))
//echo -a $remove(#channel,$chr(35))
-Andy
