Can I make rendertexture from label?

Can I make rendertexture from label?
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#1

var rt = cc.RenderTexture.create(200,200);
rt.begin();
this.scoreDisplay.visit();
rt.end();

scoreDisplay is label object
in cocos2d-x can make rendertexture from label
but in cocos-creator, visit label make error.
i don’t know how to make this.
how can i make rendertexture from label?