select only top row when using Rowspan on grid


I am using row span in grid. But I found out that when select the row,it only select for first row. So I use onRowSelect event and tried to select second row.

It worked fine when select the row but I cannot edit the data anymore. I also tried to use editCell event. But no luck. Can someone help me?

Thank you.

Best regards,
Ei Wai