How to create a trigger when someone mentions in Slack (@channel, @here, @user, @team)

Mentions are special syntax in slack. When creating a trigger, searching for this text directly does not work. Instead use this:

@channel: <!channel>

@here: <!here>

@user: <@USERID>

@team: <!subteam^TEAMID>

To discover what is the USERID or TEAMID, navigate to Slack in a web browser and Inspect any message where there is the user/team mention