Hi

**Maha,**You're on a newer version than me so I can't reference your model but just a couple of questions.

What are the FULL values of the diameter of your cylinder.... Your calculated circumference....... And your wrap length.......

Give me all the decimal points you can.

Dave.

Dave is correct.. If you delete the horizontal dims (one is an equation) and use the measure tool to get the circumference with as many decimal points as you can get and paste that value in X2 it will work.

Edit:... In other words,,, use X2 to drive the length.