UDF required For Loop

HI Friends

I need a UDF to iterate the loop with Number of Formids in the given file.

Actual process is i need to do some steps in BPM based on form ids coming from third party(webservices)

If formd count is 4 then need to iterate the loop 4 times every time next form need to send for BPM flow

1 st iteration --fromid1

2nd iteration--- Formid2.....and so on..

can anyone please help me on this into this

Regards,

Deep