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Why do the dimensions from a linked library feature appear in red in the equations of a host part?

Question asked by Chris L'Esperance on Jul 11, 2015
Latest reply on May 4, 2018 by Rob Edwards

Consider that one creates a library feature (say, a sketch with construction lines and points representing a mounting hole pattern) and uses equations to drive the dimensions on the sketch.  When one imports that library feature into another part, the equations are also imported, kind of... Meaning the global variable name from the original part file appears in the `Value/Equation' field of the part file which hosts the library feature.  It appears in red, however (see attached), and also always gives an error when one tries to close the 'Equations' window (also see attached).  Furthermore, the 'Evaluates to' field is empty.


This approach has worked for me so far.  I can't help but to think that there is a better practice here, of which I'm currently not aware.  Any comments and suggestions are greatly appreciated.