---
sourceDocument: Australia API Reference
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/de-DE/api-reference

 Release :

    - australia

ft:locale :

    - de-DE

ft:publication_title :

    - Australia API Reference

ft:clusterId :

    - crapiref

bundleId :

    - crapiref

workflow :

    - Creator


---

# Passing context variables to Live Agent and Virtual Agent chat

# Passing context variables to Live Agent and Virtual Agent chat {#ariaid-title1}

* Freigeben Version: Australia
* 
* Aktualisiert 12. März 2026
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 2 Minuten Lesedauer

You can pass chat context variables when starting a chat session by passing the contextData parameter.
You can pass this value using the [NowChatService - startChat(contextData: \[String: Any\]? = nil, _ completion: @escaping (Result\<Void, NowChatServiceError\>) -\> Void)](jPspPRx~YUj_3aZ5X1Kx7g#NChatServ-startChat_O "Starts a chat session and executes a completion block after chat session has started.") functions.

For additional information on chat context variables, see [Live agent chat context variables](https://www.servicenow.com/docs/access?context=live-agent-chat-context-vars&version=australia&pubname=australia-conversational-interfaces&ft:locale=en-US).

In addition, you can also pass an optional NowChatConfiguration parameter when starting a chat session to modify some of the behavior of NowChat.  
* closePrompt: Prompt text that appears before exiting a chat window. You define this prompt text through the following parameters:
  * header: Nullable string value that appears on the prompt's header.
  * message: String value that appears on the prompt's main body.
  * acceptButtonTitle: String value that appears on the primary button of the prompt. This button closes the chat window.
  * declineButtonTitle: String value that appears on the secondary button of the prompt. This button dismisses the prompt without closing the chat window.
  {#mobsdk-ios-pass-con-variables__ul_gm3_wyb_fdc}
* disabledFeatures: List of NowChat features to disable. Refer to the NowChatConfiguration.Feature enum class for the list of features that you can disable.
* conversationOptions: List of conversation options to apply to NowChat. Refer to the NowChatConvestation.ConversationOption enum class for the list of options that you can apply.
* uiConfiguration: UIConfiguration value used to configure UI components in NowChat.
{#mobsdk-ios-pass-con-variables__ul_v4q_lyj_kbc}  
The following code example shows how to call this method:

    // Close Button Type
    func closeButtonText(title: String?) -> NowChatConfiguration.CloseButtonType? {
      guard let title else { return nil }
      return .text(title)
    }  
      
    func closeButtonImage(name imageName: String?) -> NowChatConfiguration.CloseButtonType? {
      guard let imageName,
      let buttonImage = UIImage(named: imageName) else { return nil }
      return .image(buttonImage)	
    }


    // Create the chat UI
    func makeChatScreen() -> UIViewController? {
      guard let chatService = chatService else { return nil }
      let closePrompt = NowChatConfiguration.ClosePrompt(header: "Close Window",
        message: "Are you sure you want to close the chat window?",
        acceptButtonTitle: "Yes",
        declineButtonTitle: "No")     

      let attachmentUploadButton = NowChatConfiguration.AttachmentUploadButton(isVisible: false) // default isVisible = true         

      let chatConfiguration = NowChatConfiguration(closePrompt: closePrompt,
        disabledFeatures: [.startNewConversation],
        conversationOptions: [.forceNewConversation, .endConversationOnExit],
        uiConfiguration: NowChatConfiguration.UIConfiguration(closeButton: closeButtonImage(name: "arrow.left"), attachmentUploadButton: attachmentUploadButton))

      let result = chatService.makeChatUI(theme: CarrascoChatTheme(chatColors: ChatColors()), chatConfiguration: chatConfiguration)
             
      switch result {
        case .success(let chatViewController): 
          return chatViewController
        case .failure(let error):
          debugPrint("Chat screen creation failed with error: \(error)")
          return nil
      }
    } 

    // Start the chat session
    func startChat() {
      guard let chatService = chatService else {
        debugPrint("Chat service is invalid")
        viewState = makeViewState()
        return
      } 
      chatService.startChat { [weak self] result in
        if case .failure(let error) = result {
          debugPrint("Chat session initialization failed with error: \(error)")
          self?.resetChat()
        }
      }
     }

    // Initialize the chat service
    private func initializeChatService() {
      NowChat.makeChatService(instanceUrl: instanceUrl, delegate: self) { [weak self] result in
        guard let self = self else { return }
        switch result {
          case .success(let service):
            self.chatService = service
          case .failure(let error):
            debugPrint("Creating the chat service failed with error: \(error)") 
        } 
        self.viewState = self.makeViewState()
      }
    }