The sysUpTime (1.3.6.1.2.1.1.3) is the time (in hundredths of second) since the network management portion of the system was last re-initialized.
So to convert the TimeTicks in seconds, divide by 100.
Expression should be:
( sysUpTime / 100 ) --> result in seconds
( ( sysUpTime / 100 ) / 60 ) --> result in minutes
( ( ( sysUpTime / 100 ) / 60 ) / 60 ) --> result in hours
( ( ( ( sysUpTime / 100 ) / 60 ) / 60 ) / 24 ) --> result in days
If you want to set the threshold value in days, choose this expression: ( ( ( ( sysUpTime / 100 ) / 60 ) / 60 ) / 24 )
Thanks,
Silvio