.. highlightlang:: us .. _xysetdropvalue: XYSetDropValue ============== .. index:: XYSetDropValue .. us.tag XYSetDropValue ENGLISH XYSet :ref:`XYSetDropValue` sets the height of the ground line used to fill the area under the curve and for the drop line base point. .. function:: bool = XYSetDropValue(hData, rsDropValue) .. us.return **Return Value** If the function succeeds, the return value *bool* is TRUE (1); otherwise it is FALSE (0). .. us.params **Parameters** .. uparam:: hData The handle of a dataset created with :ref:`XYCreate` or :ref:`TYCreate`. .. uparam:: rsDropValue *rsDropValue* is the height of the ground line. .. seealso:: :ref:`overview-xy-datasets`, :ref:`XYGetDropValue`, :ref:`XYShowDropLine`, :ref:`XYShowFill`, :ref:`XYIsPolygonClosed`, :ref:`XYSetFillColor` :sub:`id-1049015`