Changing dimensions from inch to metric

Hi all,

for some reason I can't change the dimension from inch to metric.

I go to the options --> Drawing Settings and change from Inches to Millimeters. I also change the Decimals from 0.0000 to 0.00.

After this I Apply the changes and click OK.

When I try to draw something in mm it still appears in in Inches. For example, I draw a straight line that suppose to be 100mm and it shows me 100.0000 inches when I put dimensions on it.

Also, everytime I close DraftSight and reopen it, it is back to inch.

Am I doing something wrong?