Hi Philip, I´m trying to implement dynamically switching the background. As far as I understood the explanation above it depends on only one value. But what in case you want to have the ground plan of the 3rd floor of a specific of many buildings? I did a cascaded select so far. First you select the building, then you select the floor, but then I´m stuck. What I was thinking is, that I combine the two fields, like all buildings around here have numbers as well as the floors. So I get for example building 130 floor 3 -> 1303 and then concatenate this value to an image. But that´s the point where I´m stuck. Hope you can help. Kind regards Sebastian
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