How to set label_wordRex property in TextUtils in v2.0

In Cocos Creator 1.9.x, I can set label_wordRex, label_lastWordRex, label_lastEnglish, label_firstEngilsh property in my code easily (cc.TextUtils.label_wordRex = …). In Cocos Creator 2.0.x, cc.TextUtils is undefined, how to set label_wordRex property, thanks