Multiple-line cursor movements in XCode

I'd like to map a key to move the cursor in the XCode up by ten lines. Of course, I want another one to move down too. The key mapping would ideally be something like 'Control-Alt-P'.

Is there a way to achieve this in XCode without resorting to Automator?

---

Ashley has the answer below, the formatting was a little different as the property list is in XML format.

In summary, added an entry in the following format to the 'text' section of *.pbxkeys in ~/Library/Application Support/Xcode/Key Bindings/:

 <key>^~p</key>
 <array>
  <string>moveUp:</string>
  <string>moveUp:</string>
 </array>

From stackoverflow

• You can use the example given here and use a DefaultKeyBinding.dict file, except use moveUp: and moveDown: as your selectors.

  Your particular dictionary entry would look something like this:

  {
      "^~P" = (
          "moveUp:",
          "moveUp:",
          "moveUp:",
          ... however many times ...
          "moveUp:",
      );
  }
  

  I have since learned that if you have customized your keybindings through Xcode already you should instead add the same dictionary entry to your .pbxkeys file under the text dictionary section.