How to get real size of ccui.RichText()! Please help!

cocos2d-x JavaScript
#1

I use getVirtualRendererSize() to get real size of ccui.RichText but it just return size when create! anyone know this?

var richText = new ccui.RichText();
richText.ignoreContentAdaptWithSize(false);
richText.setContentSize(cc.size(500, 100));
richText.pushBackElement(retext); // 10 time
richText.getVirtualRendererSize().height; // return value: 100

#2

I posted my solution here: RichText: how to get the real content size?