Exact x, y for coordinate curve

Hi,

I Use coordinate type curve to mark local maximum/minimum on curve in report. The coordinate type curve is bound to channel and set Position to Local min/max. How to get exact coordinates of that point in vbs? X and YCoordinate return approximate point . VeloMax = sh.Objects("Velo").Curves2D(3).Shape.XCoordinate.Reference

thanks for help,

Michal