Access Parameters of a Subroutine Call from script

[kinook]

I think you meant Step.Property("ParamValues")(0)

Yes, array-type properties (for instance Subroutine Call action parameter names/values, VisBuildPro Project parameter names/values, and COM+ action properties/values) are returned as variant arrays. You can also use code like this to iterate over the values in the array

arr = Step.Property("ParamValues")
For i = 0 To UBound(arr)
Builder.LogMessage arr(i)
Next

We'll get the docs updated as well.