Problem compiling exampels

I’m absolutely new to OF and I’m trying to go thru the examples. Most of them doesn’t work for me. I get the succeed message from Xcode but the program doesn’t shows up and there is no app in the bin folder.
(the app in the left sidebar stay red)

Any thoughts?

Change the active scheme like the image.

I did that but no difference. I tried a clean also…

Oh! Now its working… There was no executable selected in the scheme.