The present invention is a method, system and apparatus for real-time multi-business modal business process transformation interaction in a cross-enterprise business process management system. In accordance with the present invention, a method for real-time multi-modal interaction in a cross-enterprise business process management system can include the steps of handling an event in a business process specification document processing engine and forwarding the event through a gateway interface to a real-time interaction client. A responsive instruction can be received from the real-time interaction client through the gateway interface. In consequence, the execution of a business process transformation script can be triggered based upon the responsive instruction.