Acdbmgd vector2d isparallelto tolerance TypeError No method matches given arguments

Hi …
Attempting to use the vector2d isparallelto method.
Error…
TypeError: No method matches given arguments for IsParallelTo: (<class ‘Autodesk.AutoCAD.Geometry.Vector2d’>, <class ‘float’>)
The v1 and v2 variable below are valid vector2d objects. …

tf = float(5.0)
if v1.IsParallelTo(v2,tf):

IsParallelTo() method takes a vector and tolerance as input
See the AutoCAD API here to construct a tolerance