I want to calculate a new field using the model builder. The new content is the "sum" of a text ("U") and a number field. I use the VB-Expression "U"&Left([GST_def],1). This expression works fine if I use it in the Attribute Table -> Calculate Field but it does not work within my model. I attached a .jpg with my Calculate Field funtion. Thanks for you help. David Jud
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