How do I take data from a data grid and put it into a variable?

Question

I am having problems taking data from a datagrid (guess you got that from the title) and setting it to a variable. I am tak
ing the data from 3 different rss feeds, depending on what button you press, and showing it in a grid. I would like to be able to do more with this data. Here is my code so far:
<mx:VBox id="vbox" x="70" y="150">
  <mx:Label text="This Data Grid is doing nothing" />
  <mx:DataGrid width="1000" dataProvider="{fullXML}">
   <mx:columns>
    <mx:DataGridColumn id="dataGrid" *dataField="channel.description" headerText="Feed"/>
   </mx:columns>
  </mx:DataGrid>
</mx:VBox>
<!-- from test 5 -->
<mx:Move id="moved" target="{hbox}" repeatCount="0" easingFunction="mx.effects.easing.Linear.easeIn" />
<mx:HBox id="hbox" fontSize="12" fontFamily="courier">
  <mx:Label text="{website**}" />
</mx:HBox>
* this is the data I want to get out
** this is where I want to be able to put the variable.
I don't know if I can do it here or if I need a function or what.
I would like to be able to put it into an array, but step one is anything at all, so I'm trying just a variable.

Answer 1

Where do I put that line of code? I see that it goes at the Script part near the top, but how can I use that, I am pretty new to this language. I am not familiar with this line, where does it bind the value from the datagrid to the variable?
fullXML[myDataGrid.selectedIndex].FIELD_NAME;
myDataGrid would be the id from the grid I am guessing?
and selected index would be the channel.description part?
and FIELD_NAME; is the variable name?
does this go into a funtion or is it placed at the top where the variables are declared?