Edit Spline from mesh...

Hi!

I currently use a modifier plugin call "Mesh To Spline" (see on http://www.maxplugins.de ) to transform a mesh to a splines cage. I use this plugin to keep the relation between the animated mesh and the spline.

I need to modify those animated spines via a script. I have add a "Edit Spline" modifier over my Stack, but I can't acces via maxscript the splines.

I only get this error "-- Runtime error: Spline operation on non-spline: Editable Poly
"

Is it possible to change the object Class? Or did you know a way to acces the Edit Spline sub-object?

Thank You for your help!