Click a billboard doesn't show InfoBox

Hi,

I organized many billboards in a BillboardCollection and draw them via scene.primitives.

Selecting a billboard I would like to display some information in the infobox with the normal selection mechanism.

The infoBox isn’t displayed. I set a description but after adding the billboard to the billboard collection, the description isn’t available.

Is there the posibility to select a billboard with click ?

I know that it works with entities, but I have to organize the billboards in a collection due to other reasons (texture problem)

Regards

Rüdiger