Program parameters for PUR520B because of printing problems

Hello,

We are on BPCS C/S 8.2.01a. We have applied a BMR bundle last week. Now we 
are having problems with printing multiple Purchase Order  in 1 run via 
ECM.
The problem is acknowledged by SSA and a BMR is escalated. We have OGS, 
but not for sources. 
We can create a workaround by calling PUR520B for every PO, via a tailor 
made program.
Therefore we need the entry parameter datastructure for program PUR520B. 
The program is call with 3 parameters
        param1          1A 
        param2          256     Internal structure
        param3          256     Internal structure

Can Anyone send me the source code or structure layout  of Parm2 and 
Param3 for BPCS 8.2.01.

Kind regards,

Peter Heeren

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