How to know how much time PPP is connected?

using command ?

Hello ,
I want to save into a file the modem uptime
ModemUpTime.jpg
Didn’t find how to save it in a command

I have try
:put [/interface get ppp-out1 ]
:put [/interface ppp-client get ppp-out1]

In both of them I don’t get the option to see the uptime

So how to save it?

Thanks ,

My impression is that Winbox calculates that value based on last-link-up-time vs current time.