Getting a particular object from NSArrayController?

So I decided to add a searchField that can search my array and update my tableview as text is inputed into the searchField....have to say I was quite chuffed about that!

Having done that I've now instigated a problem for myself! I have a double click action on my table rows that looks like this:



As you can see I get the particular notesArray object by finding out what the selected row is in the table. Then I take the object (a string) and add it to a textView to allow the user to edit it if necessary and then replace the object.

The problem I have now is that when the table updates whilst the user is searching and then double clicks on a row, I'm still getting the object for the array at that particular index.

For example let's say the table looks like this:

• Note 1
  
• Note 2
  
• Note 3
  
• Note 4
  

Note 1, 2, 3, 4 in my array are at the relative indexes, as in Note 1 is at index 1 in my array and Note 2 is at Index 2 in my array so on and so forth. However let's say the user searches for Note 4. The table updates and now looks like this:

• Note 4
  

If they double click on that row the textView shows Note 1 because Note 1 is the object at index 1 in my array.

So how would I get the correct index when the table updates when a user searches?

I really hope that makes sense, I guess there's probably an easier way to explain it!