No need for the timers, if you add away (reason) in there you can use $duration($awaytime) to get weeks, hours, minutes and seconds.

For the inc var you could have done inc -c %var to increase it one per seconds then $duration(%var) for the weeks, hours, minutes and seconds outcome.

For your %away var if you set a "away (reason)" when you go away then you can use if ($away == $true) { }