Hello all .. I'm new to the littlebits platform but am a professional software developer. In the avengers Hero app, it seems I can go into a block programming environment (by selecting code) and run operations on the BLE bit. This seemed amazing except there was no way to have a variable in the app. The last item in the left hand menu is Sound. I tried Android and iOS .. both versions of the app don't support variables (as far as I can tell). Am I missing something obvious?? Thanks!!