equation editor parameters

Hi, im new to Alibre Expert. Im working as a technikal productdesigner in my fulltimejob and bought Alibre Expert for my freelance-hobby stuff. I have allready worked with Inventor, CATIA, Fusion360, Autocad. Now i have a first Question: Is it somehow possible to assign Sketch-dimensions by...

When I change a parameter in the equation editor, the drawing feature that uses that parameter doesn't get updated. How do I get this to work properly?