jQuery Grid Plugin - jqGrid

I have formatters on visible cells that combine values on two or more hidden cells. I do editing in another area of the web page and pass the values to the grid's hidden cells using the setCell function. The formatters are not updating  the visible cells, although I thought that they were once doing so. I am not detecting any web page errors.

The formatters work when data is initially loaded. Since my editing also writes values into the database, re-running the web page will show my changes in the formatted cell. I don't want to reload the entire grid upon each data save, which is why I am attempting to change the grid cells as I save to the database.

This is my formatter function. I would like it to execute if I change the grid cells that contain values such as sAlertType, sNotifyTrigger, IUnits, etc. I've tried pasting as text and word, but both do not show well in this post. Text loses indents. Word loses linewraps.

function triggerFormatter(cellvalue, options, rowObject) {

var value = '';

var date;

switch (rowObject.sAlertType) {

case 'N':

value += 'Change in ';

value += rowObject.sNotifyTrigger;

break;

case 'SR':

case 'PR':

case 'R':

value += rowObject.IUnits;

value += ' ';

value += rowObject.sUnitOfMeasure;

value += '(s) ';

if (rowObject.sTimeRelation == '-')

value += 'prior to ';

else

value += 'after ';

if ((typeof (rowObject.sNotifyTrigger) != 'undefined') && rowObject.sNotifyTrigger != null) {

value += rowObject.sNotifyTrigger;

}

value += ' (';

try {

if (eval('rowObject.' + rowObject.sNotifyType)) {

date = new Date(parseInt(eval('rowObject.' + rowObject.sNotifyType + '.substr(6)')));

value += $.datepicker.formatDate('mm/dd/yy', date);

}

else

value += '[blank]';

}

catch (e) {

if (typeof (rowObject.sNotifyType) != 'undefined') {

if (rowObject.sNotifyType != '')

value += '[' + rowObject.sNotifyType + ']';

}

}

value += ')';

break;

case 'W':

value += 'Watch folder ';

if (rowObject.sInherit == 'Subs')

value += '(including subs) ';

break

default:

value += 'N/A';

break;

}

return value;

}