if jsonParam['value'] != None:
    if jsonParam['value'] == 'All' or jsonParam['value'] == 'Empty' or jsonParam['value'] == 'None':
        filter.Value = Enum.Parse(clr.GetClrType(ItemFiltering), jsonParam['value'])
    else:
        dataType = dataTable.Columns[jsonParam['column']].RowValues.DataType
        filter.Value = getCastValue(jsonParam['value'], dataType)
