MultiLine container element binding problem

[Nigel Thurgood]

Hi.
 
I have a requirement to 'parallel process' a subworkflow using a multiline container element, i.e. the subworkflow will be invoked for each row of the multiline container. 
 
I have managed this successfully before, but with this particular case the requirement is to update the multiline container element after the subworkflow has been processed.
 
My binding for this is as follows :
 
Workflow(A):                                                                    Subworkflow (step):
&MULTIROW[&_WF_PARFOREACH_INDEX&]&    -->    &SINGLEROW&       
&MULTIROW[&_WF_PARFOREACH_INDEX&]&    <--    &SINGLEROW&
 
With two lines in the multiline container element, each line is processed correctly by the subworkflow.
 
However, on returning to the 'calling' workflow (A), the second row is updated on each occasion, presumably because &_WF_PARFOREACH_INDEX&]& retains the value of the highest processed row index.
 
Can anyone tell me where I'm going wrong, and how to do it properly?
 
Thanks.
 
Nigel.
 
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