You are using data source blending here. please use cross joins.
bubble chart created with another ds and image sheet created with another ds.
Thank you so much for your quick reply Sankar! Unfortunately, I still couldn't make it work.
I re-did the image sheet with the same data source as the bubble sheet (which is "Sozialrendite" rather than "Impact All" - hope I understood this correctly). Again the filtering works, but no highlighting.
Maybe there is a more detailed explanation / video of how to handle these data sources that I am not aware of?
Thank you so much!
Edit your highlight action and select target values.