Dimensioneless dimension 1

[Lee2006]

To create a reference dimension in solid edge draft, how can I take the value out of a dimension and replace it with a letter/symbol.
In Solidworks and Autocad you can just delete it but in Solidedge i cant seem to find this option.
Thanks, Lee

 

[Schipperus]

When the dimension is placed, click on the 'x' in the smartstep ribbon bar (dimension type button). Select the greyed-out 'x' and your value will blank out.

Now you can type in any value in the prefix menu (button next to the dimension type button).