Cursor Position

Edit* I see that this is only for 4.11 and above, so is there another way to get the cursor. 

In the Point reference page, there is an example for returning the cursors global position: 

var pntCursor = (new Point).cursorPos();

When I run this however I get the following error: 

Script Error: Line 17

TypeError: Result of expression '(new Point).cursorPos' [undefined] is not a function.

Stack Trace: ()@:17

Any Ideas? 

I'm running DS 4.10 32bit