While trying to emulate an acoustic guitar, i'm applying Random Variation on the volume for sample played in the instrument. What i need to control is how often more extreme volumes are played, so that a volume of +/-100% occurs more rarely than a volume of say +/-5%. This would save me from having to declare volume commands for every single note. Perhaps a graph with editable points can be used to configure the curve to be applied to the randomity of the variation, such as in the attached graphic.