Thanks for the answer.
The Open API looks fine, but if it is a lot of work it is not a solution for my customer just now.
I tested Magic Info server and Datalink. It was so easy to install, set up and everything. I liked how I'm from distance have full control over the screen because the customer has a lot of building in different citys. And many screens get a lot of maintenance work.
The only problem is that I cant get the Events to work. Then I change a datalinked file (xml, csv or excel) nothing happens.
My settings is shown bellow:
Config of the Datalink for a JSON file
https://imgur.com/VSX62uNA new Event in the Event Manager is created
https://imgur.com/Xm3vqTmThe Event settings, there I can see that Datalink is working. For then I in the Json file change the marked value it is changed in the Magic Info too.
https://imgur.com/bqdm0NbThen I Create a new Event
https://imgur.com/6bobTDZIn the Event I use this settings
https://imgur.com/Rzf3yeKAnd finally I testet the Event and it works then I sends the Condition true
https://imgur.com/XDbwxKqBut nothing happends then I change the json, xml or excel file which I tested the method with.
I can¨t figure what is wrong, then I test with so many different Datalink file, i dont think the error is there.
Just now I only test on a devmachine with demolicense and I should demostration the solution before the customer choose this or a other product for their many buildings.