We recommend this excellent software to clients and use it ourselves - see here for more details. It is very versatile and the developers, led by Alex, offer great support.
Having said that, sometimes the syntax of some of the esoteric parts of the package can take some working out - so what follows are a few 'Hints & Tips'
SNMP Get and Tune up Reply
A normal SNMP Get for system up time returns an answer in miliseconds. If you want to display it in a more human readable form, the use this for the Tune up Reply value.
[(%SuggestedReply% div 100) div 86400]days [((%SuggestedReply% div 100) mod 86400) div 3600]h [((%SuggestedReply% div 100) mod 3600) div 60]m