dataSource = getDataSource(jsonParam['url'])
dataTableName = jsonParam['dataTableName']
if not Document.Data.Tables.Contains(dataTableName):
    dataTableUniqueName = Document.Data.Tables.CreateUniqueName(jsonParam['dataTableName'])
    Document.Data.Tables.Add(dataTableUniqueName,dataSource)
else:
    currentDatatable = Document.Data.Tables[dataTableName]
    currentDatatable.ReplaceData(dataSource)