Your script is missing the close brace at the end. you can also make it a single line.
on *:JOIN:#Your Channel Name:{ notice $nick Welcome to #You Channel Name $nick [ Your Message Here ] }
You don't need the / for a notice to trigger.
Are you sure you want to unfollow this person?
Are you sure you want to delete this?
Click "Unsubscribe" to stop receiving notices pertaining to this post.
Click "Subscribe" to resume notices pertaining to this post.
