Variable for Polling Interval for use in expressions
It would be very useful to know the polling interval for doing expressions. In my case, I wanted a chart that displayed the actual value of a counter (delta between two samples) and not the average per second of that counter. I was able to get the number I wanted by hard-coding an expression with the myCounter*60 (my polling interval), but if I change that interval, I have to fix my chart. An expression like myCounter*pollingInterval would be awesome (and presumably easy to expose).
