---
title: roUPnPServiceEvent
slug: develop/roupnpserviceevent
docTags: 
createdAt: 2025-03-26T17:42:08.587Z
---

This event object is returned whenever a UPnP event message is received (for example, from a Subscribe() operation on the roUPnPService object). If a UPnP event message contains multiple state variables, separate event objects will be returned for each state variable.

## ifUPnPServiceEvent 

**GetUUID() As String**

Returns the subscription ID of the subscription service sending the event. This string matches the value returned by the GetSID() method of the roUPnPService instance that generated the event.

**GetVariable() As String**

Returns the name of the UPnP state variable to which the value corresponds.

**GetValue() As String**

Returns the value of the variable.

**GetSequence() As Integer**

Returns the incrementing sequence number, which denotes the UPnP message from which the update originated. The sequence number will be the same for multiple variable updates reported in a single UPnP event.

## ifUserData

**SetUserData(user\_data As Object)**

Sets the user data that will be returned when events are raised.

**GetUserData() As Object**

Returns the user data that has previously been set via SetUserData(). It will return `Invalid` if no data has been set.