Public Function onSetItemValue( _
   ByVal AppItemHandle As Integer, _
   ByVal newValue As Object, _
   ByVal quality As Short, _
   ByVal timestamp As Date _
) As Integer

public int onSetItemValue( 
   int AppItemHandle,
   object newValue,
   short quality,
   DateTime timestamp
)

Parameters

AppItemHandle

Handle that identifies the item in the plug-in

newValue

New value. It needs to be the same datatype as the initial value.

quality

OPC DA quality code for the value.

timestamp

UTC source time stamp

Target Platforms: Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows 7, Windows Server 2008 family

Reference