code: function(value)
  	{
  		if(this._legendLabelFunction)
  		{
  			YAHOO.widget.Chart.removeProxyFunction(this._legendLabelFunction);
  		}
  		
  		if(value)
  		{
  			this._legendLabelFunction = value = YAHOO.widget.Chart.getFunctionReference(value);
  		}
  		this._swf.setLegendLabelFunction(value);
  	}
docs: Setter for the legendLabelFunction attribute.
  
  @method _setLegendLabelFunction
  @private