i follow this wonderful and brief tutorial from mr Kiet. https://blogs.oracle.com/fmwinaction/entry/oracle_bpm_adding_an_attachment
once i implemented it in BPM 220.127.116.11 and it works like a charm, but when i try it in BPM 18.104.22.168 it always throws error.
the error is : DCA-29000: Unexpected exception caught: java.lang.NullPointerException
the error show up when you try to open the task detail. have anyone succeed in adding attachment in BPM 22.214.171.124 on init ?
pls throw some pointer.