Hello,
I don't know what you mean by "link references." It is not possible to create a reference to an input parameter of a MathScript node like you can create a control reference for a front panel control. In LabVIEW 8.5, you can probe a MathScript node in order to see what the values are in your script. In LabVIEW 8.6, you can also set breakpoints and single step to see how your variables are updating.
Grant M.
Staff Software Engineer | LabVIEW Math & Signal Processing | National Instruments