Hello every one i am using SOLIDWORKS 2012 version. I want to give LINKED DIMENSIONS to my sketch, where the general procedure is by double clicking the dimension we can see a down arrow side of the value from which we can get LINKED DIMENSION option, here i am not getting this option.

   I am attaching a picture with this, where you can see my problem.Please find me a solution or settings which i have to change.

Regards,

CHARAN.