Can't get parameter value correctly from revit

Hi,

I am new to grasshopper, does anyone know the reason I cannot get the correct value from revit?

These values are displayed in scientific notation.
For instance, 2.6971e+7 is equal to something like 26,971,000 units^2 in terms of area in decimal notation. The numerical value could for instance be 26,971,000 mm^2 which would be 26.971 m^2?

Does that seem right in terms of project dimensions or could there be a discrepancy between the document units or scale between Revit and Rhino/Grasshopper?