how to do break line in cclabe in android?

i make a cclabe like below,but it can work correct.
label = CCLabel.makeLabel(“000000000\n0”,LayerGridConfig.getFont(),
LayerGridConfig.getFontSize());
label.setTextureRect(CGRect.make(120f, 200f, 60f, 70f)) ;
label.setAnchorPoint(0f, 0.5f);
label.setPosition(CGPoint.ccp(300f, 200f));
addChild(label);

the string “000000000\n0” change to “00000000000”,it work correct.

It seems not problem here.