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Geometric properties can be used labeling where they can be rounded using the XFM Evaluator Expression XFM.Round.
For example, the following will round Geometry_Area to two decimal places:
[XFM.Round([Geometry_Area],2)]
This expression can also be used to convert Geometry_Area to another unit of measure such as acres.
The following will convert Geometry_Area from square feet to acres and round the resulting value to 4 decimals.
[XFM.Round(([Geometry_Area] * 0.0.00002296),4)]
or
[System.Math.Round([Geometry_Area] * 0.00002296,4)]
For converting square meters to acres, use this value: 0.00024711.
Note, while this article only shows labeling the Geometry_Area, the same principles can be used for any numeric property.