BrightSign Object Reference Manual (FW 5.1) - Manual (Page 262)

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• GetString() As String: Returns the string associated with the event. For transfer-complete
AsyncGetToString(), AsyncPostFromString(), and AsyncPostFromFile() requests, this will be the
actual response body from the server, truncated to 65,536 characters.
The ifSourceIdentity interface provides the following:
• GetSourceIdentity As Integer: Returns a unique number that can be matched with the value returned
by roUrlTransfer.GetIdentity() to determine where this event originated.