Convert "red" dimensions to absolute "blue" ones

Hello

When I create a new extrude my dimensions are red at first. They don't appear in the expressions. Only after I change the values they get blue and absolute.
Picture: 50 is set, 74 is still red and has no name.

This is a problem because I want to get all dimensions of a part. Can I convert all red ones to absolute blue ones? Or is there an other way I can get the Name and value of the red dimensions?

If not, is there at least a way I can check if a part has still some red dimensions in it?

Thank you and Regards