Seek on a composite key act on AS/400 files exactly like on Hyper File files.
You must build the key value using function hBuildKeyValue or pass each value using an array: [value1, value 2, value3...].
Special values HValMin and HValMax .are also compliant with AS/400 files.
If a sort of sequence is defined for the file or for the job, and if the highest character is not FF (Hexa) for this sort sequence, you need to set extended info HFMAXHEY.