Double-click the dimension, then in the Modify dialog box, click and select Link Value.
- or -
Right-click the dimension and select Link Values. In the dialog box, select or type a Name. More information is available under "shared values" in the SW help menu.
Other alternative options are equations, or creating a derived-sketch.
edit the dimension value and in the drop down below the text selct link value and give it a name. edit the next dimension and select link and then you should have the previous name available in that drop down.
Thank you very much gentlemen.