Using Appium.app to test against iOS simulator is not working

I have verified that the iOS settings in Appium match up with the build settings I used in Xcode. I also verified that Instruments is not running, a real device is not connected, and the node server is not running.

I am starting the simulator first.
When I click Launch, I see these lines in the log:

Not checking whether simulator is available since we’re on a real device
Not setting device type since we’re on a real device
Not setting iOS and app preferences since we’re on a real device
Not setting locale because we’re using a real device

Is there some setting in Appium.app that I need to set in order to run against a simulator?

OKAY, I GOT IT TO WORK. I had not unchecked the UDID field