HOW can i rotate the loop as many lines of multi line container in BPM

Hi All

I have to send an idoc to 2 Receivers by spliting the message.

Based on the occurance of a particular source segments i need to create those many instance of targets.

IDOC ---> Rec1 (More than one message instance)

---> Rec2 (More than one message instance)

I have taken messages of Receiver into a multi line container1

and messages of Receiver 2 into another multi line container2.

HOW can i rotate the loop as many lines of multi line container.

Thans

Prasad