Integrating JBE with WebSphere ANT Tasks

Has anybody invoked successfully WebSphere ANT Tasks (like <wsadmin>)
from an ANT script executed by RTC JBE?

WebSphere ANT Tasks by default require to be eexcuted by a special ANT
Wrapper called ws_ant.bat:

http://www-01.ibm.com/support/docview.wss?uid=swg21081282

I am wondering if anybody has been able to set up JBE to be able to
execute such ANT Tasks: setting properties, copying needed JAR files,
etc... and can comment the steps.

Thanks in advance,

Chemi.