fix a bug that error on check model's gender.

Change-Id: I4c579db67824abe72c0c37da16ffe31727247a08
Signed-off-by: Sharl <amoiz.shine@gmail.com>
use model's offset value calculated dynamically rather than old value
written in code.

Change-Id: Ie3de5e4a2ede83fb8809a35a9cd6671f00c4d874
Signed-off-by: Sharl <amoiz.shine@gmail.com>