I made a Custom UIView covered by UIButton. But I can't change the property at other class

Question

ㅣ [       ] ㅣ   
ㅣ [ image ] ㅣ
ㅣ [       ] ㅣ <- Cover the Button
ㅣ   Label   ㅣ

I want to make Custom Button look like above. So I made a .xib and