A question about load combination naming rules

Hello, I encountered an issue regarding load combinations: I am using Karamba version 3.1.40320. I noticed that this new version includes two new components related to “load combinations” (Load-Case-Combinator and Load Case Combination Settings). I want to use these new features to achieve the load combination: 1.3*(D+G)+1.5*L (where D, G, and L are custom load case defined by me), but the program shows an error. Could you please help me understand where the problem might be?
Looking forward to your response. I would be very grateful.

Hi, you also need to include the name of the load combination
ULS = 1.3*(D+G)+1.5*L