Data Grid Component

Hi,
I have a question regarding the Data Grid Component. I want to trigger a function to call the XML into a txt label field. What is the right syntax for the code needed.
This is what I have so far. The var name for my label is client…this obviously does not work…

_root.myportReceiveXMLConnector.trigger();
listenerObject = new Object();
listenerObject.cellPress = function(event){
client.text(firstNode(0).childNode(0));
myportDataGrid.addEventListener(“cellPress”, listenerObject);
}