Font Book's font title show different style

Hi mac people,

I have create a font family, will publish to sell, but when i test it in the font book,

in the information page, the title"ABC regular", use different style instead of my created style, other place have no problem.

Why is this happening?

How can I solve it?

I create the fonts set by using a photo app to create the shape then use inkscape to convert the shape to sag file, then use font forge to create ttf file.

Please help, really need answer soon!!!