Bar chart add a subset

Description: Bar chart add a subset.
Assumptions: myVis is a visualization type script parameter.

from Spotfire.Dxp.Application.Visuals import VisualContent
myVisVC = myVis.As[VisualContent]()

NewMarkingSubset = myVisVC.Data.Subsets.AddDataSelection(Document.Data.Markings['TestMarking'])
#NewWhereClauseSubset = myVisVC.Data.Subsets.AddWhereClauseExpression()