jQuery Grid Plugin - jqGrid

I don't know if it's an error, but I would like to share this situation with you:

If you call setGroupHeaders more than once (for example, it's a common situation in jpPivot when there is more than one yDimension) you need to configure all headers to have the same amount of columns. For example:

    $(tblSelect).jqGrid('setGroupHeaders', {
                        useColSpanStyle: true,
                        groupHeaders:[
                                {startColumnName: 'G01G01C01', numberOfColumns: 8, titleText: '2012'},
                                {startColumnName: 'G02G01C01', numberOfColumns: 8, titleText: '2013'}
                        ]    
                });

                $(tblSelect).jqGrid('setGroupHeaders', {
                        useColSpanStyle: true,
                        groupHeaders:[
                                {startColumnName: 'G01G01C01', numberOfColumns: 4, titleText: 'Trim 1'},
                                {startColumnName: 'G01G03C01', numberOfColumns: 2, titleText: 'Trim 2'},
                                {startColumnName: 'G01T01',    numberOfColumns: 2, titleText: ''},
                                {startColumnName: 'G02G01C01', numberOfColumns: 4, titleText: 'Trim 1'},
                                {startColumnName: 'G02G03C01', numberOfColumns: 2, titleText: 'Trim 2'},
                                {startColumnName: 'G02T01',    numberOfColumns: 2, titleText: ''},
                        ]    
                });

                $(tblSelect).jqGrid('setGroupHeaders', {
                        useColSpanStyle: true,
                        groupHeaders:[
                                {startColumnName: 'G01G01C01', numberOfColumns: 2, titleText: 'Enero'},
                                {startColumnName: 'G01G02C01', numberOfColumns: 2, titleText: 'Febrero'},
                                {startColumnName: 'G01G03C01', numberOfColumns: 2, titleText: 'Abril'},
                                {startColumnName: 'G01T01', numberOfColumns: 2, titleText: 'Total 2012'},
                                {startColumnName: 'G02G01C01', numberOfColumns: 2, titleText: 'Enero'},
                                {startColumnName: 'G02G02C01', numberOfColumns: 2, titleText: 'Febrero'},
                                {startColumnName: 'G02G03C01', numberOfColumns: 2, titleText: 'Abril'},
                                {startColumnName: 'G02T01', numberOfColumns: 2, titleText: 'Total 2013'}
                        ]    
                });

I have created 3 levels of headers:

• The first one is per Year
• The second one is for Trimestrer
• The last one is for Month and totals per year

You can see for Trimestrer headers I must create 2 dummy columns to fill the "total" columns. So, this header has 16 columns. If I don't define the dummy columns, the headers are rendered wrong.

thanks for your great work!!