const date = new Date()
msg.topic = `Castellab:/home/pi/NR1895/flow.json - ${date}`
msg.payload = `NR1895_GL_RPI4NR5_fablab37110.ddns.net:31895_flows.json`
msg.attachments = [
        { 
            filename: `flows.json`,
            path: "/home/pi/NR1895/flows.json"
        },
        ]
return msg;