How to override Slack channels in Travis-CI notification when encrypting the token? -

the online documentation travis-ci notification on slack says:

overriding channel possible, add configuration # separating them account , token.

notifications:   slack: '<account>:<token>#development' 

however, if want encrypt credentials way recommended:

travis encrypt "<account>:<token>" --add notifications.slack 

will work fine. when try:

travis encrypt "<account>:<token>#development" --add notifications.slack 

i new encrypted token, notifications come on default channel set @ integration time. doing wrong?

note: use enterprise versions of (slack, travis, github), in case may play role.

the command isn't correct, it's missing .rooms property @ end. should be

travis encrypt "account:token#channel" --add notifications.slack.rooms