Hello.
I've followed this documentation to create an automation rule (to receive a Slack message each time I'm mentionned in a comment):
https://confluence.atlassian.com/automationkb/integrate-an-automation-rule-with-slack-1130727566.html
But I cannot select a webhook url, the dropdown is showing "No options" while I've created an Automation rule secret pointing to the webhook url from the dedicated Slack App (simple creation to provide a webhook for my personnal account)

I've also tried to paste the webhook url from the App but it does not work either. Also note that our admin tried but without success (I asked him to check if it was a permission issue)
I would appreciate any help :-)