#get a reference to a filter as checkbox
filt=Document.FilteringSchemes[0].Item[myDataTable].Item[myDataTable.Columns.Item["Region"]].As[CheckBoxFilter]()
filt=Document.FilteringSchemes[0].Item[myDataTable].Item[myDataTable.Columns.Item["Region"]].As[CheckBoxFilter]()
#uncheck all
filt.IncludeEmpty = False #make sure to clear the empty values
for value in filt.Values:
filt.Uncheck(value)
filt.Uncheck(value)
#check one
filt.Check("Asia")
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