Hi,
I'm trying to add a basemap provided by an AGS 10.1 to my WAB-Application. The service is token-based secured. Operational secured layers work fine with a proxy configuration. This is the config-UI for the basemap gallery widget:

It is also impossible to combine non-secured with secured services in this UI. I thought another workaround would be, to add the basemap directly to the web map, but then the other esri basemaps didn't work; or more precisely: if I switch over to an esri basemap my own secured basemap turns grey an is not available anymore.
I appreciate any suggestions
Andre