Hi all. I have not used SE 2D for a while. I am starting over now, with version 20. Smoother interface. Here's my problem: On a new doc, I draw a simple line which I dimension with the "Smart Dimension" tool. This creates a driving dimension Vxxx, which I can see in the variable table. If I create a variable in the variable table, say "A", and then set the formula of dimension Vxxx equal to A, the line takes the length defined by A. When I unlock the dimension (making it non driving) and then change the size of the line by hand, the variable table keeps showing that Vxxx has A as a formula, but the value is different from A. Afterwards I can't find a way to relock the dimension and make it effectively equal to A, except removing Vxxx and creating a new dimension as the first time. Is that a bug? Or did I miss something? Thanks a lot. Cedric.