jQuery Grid Plugin - jqGrid

Hi,

How can I set a column in the footerdata with a dynamic name? Instead of doing:

grid.footerData('set', { Total: total.toFixed(1) });

I would like to do something like:

var colName = 'Total'

grid.footerData('set', { colName: total.toFixed(1) });

But this obviously is not working... How can I make this work?

Thanks, Harmen