OK Google / Speech control does not find playlist [German]

[serioustk]

Hello everybody,

I'm sure this question has been asked before but I'm not able to find it, so here I am with my question:

I'm using Android Car (german) and would like to play my playlists using ok google command. Playing artists and songs works great with a command like "ok google, play joe bonamassa on spotify" (translated) but something like "ok google, play my "summer on the rocks" playlist on spotify" (also translated) leads to an empty result with several playlist names.

Can anybody tell me the correct command to make spotify play my playlists via voice control?