I'm new to MathStudio and it seems that 3D vector plots are something that is rarely implemented in any of the CAS systems I have explored. It seems that MathStudio has a built-in 3d vector plotting function but the example does not work. Is this function not implemented yet?
Yes, this is still something that needs to be implemented in the new version but it's currently not yet available. It's still in the manual because it was a feature in the previous version.