如何在pinescript中检索标签文本并将其粘贴到某个位置？

//@version=4
study("Label Example", overlay=true)

var label myLabel = label.new(x=bar_index, y=close, text="Hello World", color=color.blue)

var string labelText = label.get_text(myLabel)

label.new(x=bar_index, y=high, text=labelText, color=color.red, textcolor=color.white, style=label.style_labelup)