Get selected item from Combobox in Grid: Edit mode

I apologize for cross posting but couldn't decide what made the most sense :(

I need to run a couple of discrete stored proc when I do my update from a grid.  I need to check if the combobox selection indicates a change to one field and if so execute etc.
I can't for the life of me figure out how to get that value, I tried an selectedindexchanged event and that doesn't seem to work either. I'd be very grateful for a nudge in the right direction as I'm veryyyyyyyyyy rusty :(

Here's what I tried most recently:

protected void RadGrid1_UpdateCommand(object source, GridCommandEventArgs e)
{

if (e.CommandName == "Update")
{


GridEditableItem item = (GridEditableItem)e.Item;
RadComboBox combo =(RadComboBox)item.FindControl("updateComboBox");
var status = (string)item.GetDataKeyValue("status");
if (combo.SelectedItem.Text!= status)
{
 // Do my update...
}