Calculating a percentage from two OIDS

Calculating a percentage from two OIDS

I cannot get this to work...

i have OID: .1.3.6.1.2.1.43.11.1.1.9 which is the current toner level in the printer
and i have OID: .1.3.6.1.2.1.43.11.1.1.8 which is the total capacity

i tried several different way of putting it into the add bulk option but none of them work. the device responds to both OIDs however...

i have tried: .1.3.6.1.2.1.43.11.1.1.9 * 100 / .1.3.6.1.2.1.43.11.1.1.8 got nothing
i have tried: (.1.3.6.1.2.1.43.11.1.1.9 / .1.3.6.1.2.1.43.11.1.1.8 * 100)
i have tried (1.3.6.1.2.1.43.11.1.1.9 * 100 / 1.3.6.1.2.1.43.11.1.1.9)

none of these work... i keep getting "  The Monitor did not respond to the test request"

can you shed some light?

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