CAPsMAN instructions result in "Invalid value in Master"

That’s fair I suppose. I mean it is an official MikroTik tutorial video so I would hope someone has seen it.
Step 1: connect to the device. Navigate to wifi → Remote CAP tab. Click on Capsman settings then enable.
Step 2: Wifi → Configuration to add a new profile. Basic settings: ssid, country, auth types, and Passphrase
Step 3: Wifi → Provisioning tab to add provisioning rule. Add a new one, action = create dynamic enabled, set master configuration to the preset profile in step 2.
Step 4: Wifi -. Wifi tab, create new - configuration: select the preset profile.
And that’s pretty much all he does. Except, when I do it there is a Master drop down, which as I said is blank. And when I click ok I get an error.
master.jpg
invalid.jpg