About strings of RadPieChart （Localization）

[jeremy]

      Hi  Telerik,
      I am a chinese ,   I use RadPieChart to display  some information. When the  RadPieChart  has no data, it displays " No data to Plot ". I wish to change the string of  "No Data To plot"  by chinese.
      I use   the   LocalizationManager.Manager  of radcontrol ， the key of RadPieChart is "ChartNoDataMessage" in your help document. but it doesn't work. Please help me .