Cant get Object value "Object?["Value-Average"]"

I tried to enter a JSON Object Value but i can’t get the value.

{{herosData?.SoloKills}} works fine but {{herosData[“SoloKills-Average”]}} does not work. I can’t find any solution in the Angular 2 documentation.
The ? is required but it will not work on any position …

You can find the JSON data here:

I hope someone can help me with that problem :slight_smile: