Alexa Studio Station Logo or title picture not showing in item

Hello Everbody,

I’m using openhab 3.4.2 on synology DS220+ and have connected my alexa Studio

A lot of items getting there states an information via this binding without any problem but so far I was not able to get the channel imageURL(String) running or I expect something different.

I’d like to use this Item in a controll widget to show either the radio station logo or the cover of the title playing but however i configurate the channel or the item i get only a plain field.

Attached my configuration. Hopefully someone has already solved this problem or knows the correct configuration of the item to show a picture.