[TYPO3-commerce] Category Images in Category Single View

[t.maroschik at thegecko.info]

Dear Commerce Community,
I'm building a Shop since about a month and I fail permanently at changing the size of the category image in the product listing.
Can anyone tell me please the right constant for that? I've tried already any Constant with .maxW I found in the Object browser, nothing solved my case.

I would appreciate a fast answer, because I'm slowly running out of my hair at this problem :D

Best regards,
Thomas Maroschik