Is there any work around for plotting a coordinate that exceeds the geometry working range?

I am trying to plot points from an excel spread sheet back into revit using my script, but the coordinate are national grid coordinates, so when I convert them from mm to m, the geometry working range is exceeded. An example of one of the coordinates is as follows: x = 716503185.000 y = 732897755.000 z= 20671.000

Any ideas would be greatly appreciated.