FearLess Cheat Engine

Hi guys, recently I played Disgaea 4 and I completed all normal stage and the X-dimension stage post game. I already get the body and the leg of P Flonzor, and I captured the Professor, Force magic knight, prinny king and thanatos. But after I save the game and interrogate repeatedly just like the guide said, only "Take in as an ally" and "Take money" always appeared but no "Find treasured". Is this bug? Please help me. Sorry for bad english