Did you have a look at the Tutorial_RunBaseBatch class in the AOT?
you can try to paste the code you showed me in the run method, delete variable and parms you don’t need in your copy of the class and test.
You can have a look in the following links:
http://msdn.microsoft.com/en-us/library/aa549082(v=ax.10).aspx
http://www.axaptapedia.com/index.php?title=RunBaseBatch
Regards,
Thomas