Hi,
The solution of HP wasn't a real solution ;-). They didn't read my description of my problem.
I can easily access the ews.
So once I'm connected to the network at my office via VPN, I can acces the EWS from the printer at the office.
And when I give the command to print, the print job will appear in the waiting-list.
After a few seconds I get the warning the spooler can't connect to the printer and in the waiting list the status of the document will change to Error-Offline-Print.