Problem in updating files in BPM

Question

Hi ,
I have a question where I need to append two files and send them as one file at the receiver by using a coorelation.
Lets Say we have two files -File A and File B both in delete mode .Both  are required to be appended and sent as one file ,say AB on the basis of a correlation on a unique value .(e.g division number ).
Acc to the project requirement ,After sending a file A ,If once again a new file of A (e.g A(1)) is updated before the second file B reaches the BPM ; We should append the latest file( A(1) ) with B ,and send it across the receiver .(In this case the result file should become A(1)B  ).To achive this we are using a container operation in assign mode and hoping that every new message of same type is overwritten.
But everytime we are updating the file A it opens a new instance of BPM although the coorelation Id is same .
When we send file B with that coorelation ID as of file A,it closes both the instances and creates two file , AB and A(1)B.
We wish that the BPM discards the old file(A) and uses the updated file( A(1) ) in the same instance and puts it on the receiver .
I would like to know if XI behaves in this way only or we are missing something .
Thanks and Regards ,
Neha.

Answer 1

Hi,
Why do you need 300 sequence files for 300 requirements??? You can keep each requirement in a seperate sequence in a single/multiple sequence files.
With regards to reading your variables, you can read from a file through activeX or easier still, doing it through a code module (say a LabVIEW VI or CVI module).
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