Applies to: NetworkVariable object, NetworkVariableField object Summary: This property holds the handle of the Data Object as set in the Data Server. Syntax: handle = object.DataServerObjectHandle Element Description handle Data Object handle. object NetworkVariable object. Data Type: Long Read/Write: Read only Remarks: The handle is a unique identifier assigned to a network variable point by the Data Server when that network variable is being monitored. Handles are required for direct access to the Data Server API. 不够清楚吗？