Weight/Mass Decimal problem in drawing format

I have a weight/mass that is documented on all of our drawings that is derived from

""SW-Mass@\$PRP@filename.SLD***"

via this placeholder in the drawing format

WEIGHT: \$PRP:"Weight"\$PRPSHEET:"Weight"

Weight.bmp

That points to a property in the part/assembly

"SW-Mass@filename.SLD***

The problem is it shows up as a three place decimal number and when I select

model/assembly tools/options/document properties/units

the Decimals field for Mass is not selectable.

Mass-decimals.bmp

Ultimately I just want the weight on the drawing to show a rounded whole number.

How do I alter the decimal to do so?

SolidworksDrawings And Detailing