click to cure edits

[comcheck]

Hello
Long time user but first time poster here
been playing around with the click to cure buttons and have been able to get it to send a message to group and the person with the click.
But on the curse i would like to be able to send a message to our raid healer channel.
I try putting in the /4 ( which is the chat number for me) but it wont send anything to there.
now im just wondering if there is a way to do this that i have missed in the search.
or am i just putting in the command wrong ?
any help would be welcome