'Usage
Dim instance As ExcelChart
Dim value As IExcelChartFormat
instance.PlotAreaFormat = value
value = instance.PlotAreaFormat
Requirements
Target Platforms: Windows 7, Windows 8 Desktop, Windows Vista SP1 or later, Windows Server 2000, Windows 2000 Professional (SP4), Windows XP (SP2), Windows 2008, Windows 2003 Server (SP1)