A DESCRIPTION OF THE REQUEST :
Currently the charts that are shown when you double-click a value for your custom MBeans only draws integer values.
The problem is that if you, for example, have a double attribute that only takes values between 0 and 1. Since the chart only accepts the integer value of the attribute. You get a chart with a straigth line with the constant value 0
It's quite common to have values that only lie between two consecutive integers or in a very small interval.