I have a template where I've created two items.

The keys are:

fmUsedMemory and fmTotalMemory

I am trying to either create a calculated item that works like:

(fmUsedMemory/fmTotalMemory)*100

or a trigger so I can alert whenever it goes above 90%

Every time I create it, the two items connected to OID's populate as expected, however the calculated item either errors out or goes unsupported.

I've been messing around with this for a day or so with no progress. I need clarification and help.