Actually, your random expression would look like this: random([0,10,50],[100,50,80]) giving you an x range of 0 to 100, y of 10 to 50, and z of 50 to 80. wiggle() generates values of the same dimension as the property to which it is applied. random() takes one or two parameters (scalars or arrays). If you only provide one parameter, the other is assumed to be zero, (or [0,0], or [0,0,0], or [0,0,0,0], etc.) and generates values with dimensions matching the parameters that you supply. Dan
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