Hi Seppe,

Thanks for your reply! That was a great hint — we got it working with the code below.

using System;
using System.Collections.Generic;
using System.Linq;
using Skyline.DataMiner.Automation;
using Skyline.DataMiner.Net;
using Skyline.DataMiner.Net.Messages;
using Skyline.DataMiner.Net.Messages.SLDataGateway;

public class Script
{
public void Run(Engine engine)
{
// Konfiguration
string title = "Systemmeldung";
string message = "Wartung beginnt in 1 Minuten.";
TimeSpan duration = TimeSpan.FromMinutes(1);

try
{
// 1. Cube-User abrufen über SLNet
var response = engine.SendSLNetMessage(new GetInfoMessage(InfoType.ClientList));

var cubeUsers = response
.OfType<LoginInfoResponseMessage>()
.Where(c => (c.ConnectionAttributes & ConnectionAttributes.Cube) == ConnectionAttributes.Cube)
.Select(c => c.Name)
.Distinct()
.ToList();

if (cubeUsers.Count == 0)
{
engine.Log("Keine aktiven Cube-User gefunden.");
return;
}

// 2. Popup vorbereiten
DateTime expiration = DateTime.Now.Add(duration);

var popup = new BroadcastPopupRequestMessage
{
PopupInfo = new Skyline.DataMiner.Net.Broadcast.PopupInfo
{
Source = Guid.NewGuid(),
Title = title,
Message = message,
UserNames = cubeUsers,
Expiration = expiration
}
};

// 3. Nachricht senden
bool sendPopup = true; // Auf true setzen, wenn wirklich senden, ansonsten Logfile

if (sendPopup)
{
engine.SendSLNetMessage(popup);
}
else
{
engine.Log("Popup wurde NICHT gesendet – nur Testausgabe:");
engine.Log("Title: " + popup.PopupInfo.Title);
engine.Log("Message: " + popup.PopupInfo.Message);
engine.Log("Users: " + string.Join(", ", popup.PopupInfo.UserNames));
engine.Log("Expiration: " + popup.PopupInfo.Expiration);
engine.Log("Source GUID: " + popup.PopupInfo.Source);
}

engine.Log($"Popup an {cubeUsers.Count} Benutzer gesendet.");
}
catch (Exception ex)
{
engine.Log("Fehler: " + ex.Message);
}
}
}

Best regards! (and sorry about the German comments in the code)