FFT:WOTL how to add "delita"to party

[SilverRegret]

hello, its been a while since i last log in on FF Hacktics...
anyone can help point me on how to modify things?
since WOTL cant assign different formation sprite to other ID, i changed dead malak event formation sprite to delita sprite,
changed the text on FFtactext, modify the job on FFT patcher, and changed the sprite on shishi editor,
but now i'm kind of stuck on how to add him on my party through event.
i tried to modify the ENTD event after battle of zeltenia castle
where ramza meet delita on chapter 4, i changed the id of delita in that event to the modified malak,
then i put "join after event" option, but the character do not join my party in the end,
is the event simply do not have join party requirement or do i need to do something else to make delita join my party?
please help me, its been a while since i tried to modify FFT, and i kinda lost here...

thank you.