This run-time message will be generated if the value of the Using the Date System parameter of one of the MonthHeader GridOptions settings is not in the list of acceptable values.

As the selection of this value is done from a selected list of possible values, as shown in the image on the right, this message should never occur.

If it does, please send us this script to using the technical support module.

Topic 172400, last updated on 19-Apr-2020