I want to display an image in the widget value display. Aparrently it's easy but impossible to find a correct way to do it. I add a property image in my thing where I put an image. Now I suppose I have to grab it in my mashup but I don't know how.
You simply need to map the output of image property to the 'Data' input field of the Display Value widget. You can create a service for getting properties of the ThingTemplate/Thing and then do the required mapping as stated.