using setColumnHidden for Multiheader()

I have

mygrid.setHeader("Log,#cspan,#cspan,Details,#cspan,#cspan);
mygrid.attachHeader("Time,Source,Edited,Type,Action,Date);

mygrid.setInitWidthsP(“15,15,15,15,15,*”);
mygrid.setColWidth(4,“0”);
mygrid.setColumnHidden(4,true);

The grid is not respecting hidden column…
If I remove #cspan the grid structure is not coming properly…

Let me know if any one have ny solution…

Thanks
Lavanya

This is known limitation. There is no way to hide column correct if this column is merged with other column in the header.