How to get modified values from dojo table - dojo

Question

I have a Dojo table with list of key value pairs. Both fields are editable, once a value is modified i am doing:
var items = grid.selection.getSelected();
However, the modified value is not picked up only the old value is picked.
I tried the following:
dojo.parser.parse()
dojo.parser.instantiate([dojo.byId("tableDiv")]);
but none of them worked. Can any one sugggest a solution for this.
function getAllItems() {
var returnData = "";
//dojo.parser.parse();
//dojo.parser.instantiate([dojo.byId("tableDiv")]);
//grid._refresh();
var items = grid.selection.getSelected();
function gotItems(items, request) {
var i;
for (i = 0; i < items.length; i++) {
var item = items[i];
var paramName = grid.store.getValues(item, "paramName");
var paramValue = grid.store.getValues(item, "paramValue");
if (returnData == "") {
returnData = paramName + "&" + paramValue;
} else {
returnData = returnData + "#" + paramName + "&"
+ paramValue;
} document.getElementById("returnData").value = returnData;
document.getElementById("successFlag").value = "true";
}
}
//Called when loop fails
function fetchFailed(error, request) {
alert("Error reading table data");
}
//Fetch the data.
jsonStore.fetch({
onComplete : gotItems,
onError : fetchFailed
});
}