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changing a previous dimension with smart dimension fails

Question asked by Michael Kotarba on Oct 13, 2008
Latest reply on Oct 21, 2008 by Michael Kotarba
I am trying to revise a sheet metal bracket dimension of a bracket and I get an error. The error is "failed to create dimension for selected face or feature"
Why is this error happening when I can overide a given dimension with smart dimension in the final drawing but not in the sketch?
I am trying to edit the vertical dimension of the U shaped bracket it is currently 2 1/2 inches tall and now I want it to be 1 1/2 inches. I tried rolling the sketch back to the part where I made the U shape and change the height with smart dimension but the program will not let me. Any helpful suggestions would be helpful.
Any suggestions would be helpful,
mike kotarba
p.s. what file types are allowed? I tried to upload a solidworks part and a drawing that isnt allowed? why is that?