Bar chart error bar lower error expression

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Description: Bar chart error bar lower error expression.
Assumptions: myVis is a visualization type script parameter.

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

#Bar charts only support y-axis error bars
#Notes: Delta and Value1 are column names

myVisVC.YAxis.ErrorBars.LowerExpression = "StdErr(Value1)"
#myVisVC.YAxis.ErrorBars.IndexedLowerExpression["Sum(Delta)"] = "StdErr(Value1)" #Indexed example