DM365 IPNC change H.264 encoder profile from 100 to 66 but failed

I changed the H.264 (Appro IPNC) profile from 100 (HP) to 66(BP) but the encoder library does not like it.

 ERROR  (alg_vidEnc.c|ALG_vidEncCreate|197): Failed to open video encode algorithm: h264enc (0x0)
 ERROR  (videoEncodeThr.c|VIDEO_encodeTskCreate|61): ALG_vidEncCreate(0) ERROR  (videoEncodeThr.c|VIDEO_encodeTskMain|361): VIDEO_encodeTskCreate()
 ERROR  (avServerMainThr.c|AVSERVER_tskStart|82):

The place I changed is alg_vidEnc.c file in av_capture/framework/alg/src directory.

pObj->params_h264.profileIdc = 66;//100;

Just want to know why. Is TI encoder support HP (which includes BP) only ?

Thanks.

Bo