How to sweep multisection along 3D..?

Dear all,

I would like to sweep from one diameter to another in a 3D space using points and spline. I tried using "Sweep_with_multisection" example. But, this uses offset in a single coordinate which is not useful for my case.

Below, I have mentioned the code in which the base I need diameter of 4mm and top I need diameter of 2 mm.

`import cadquery as cq
from cadquery import exporters
show = show_object

#circle = cq.Workplane("XY").circle(0.072)
#show(circle)

dia = 2
x = 50
y = 0
z = -5

pts = [(x, y, z), (x, (y+2), z), ((x-2), (y+14), z)]
path= cq.Workplane("XY").moveTo(x, 0).spline(pts)
sweep = cq.Workplane("XZ").moveTo(x, z).circle(dia).sweep(path)`

From the above code, I get the entire tube as diameter 2. Below is the manipulated code for sweep.

`sweep = cq.Workplane("XZ").moveTo(x, z).circle(4).workplane(offset = (x-2, y+14, z)).circle(dia).sweep(path, multisection=True)`.

How to modify this sweep code so as to obtain base dia as 4mm and top dia as 2mm.

Below is the reference image.

[Sweep_link](https://drive.google.com/file/d/1jno-Yb3Rq0xpfBWTqriQ9zAtHltoAgov/view?usp=sharing)

Any leads will be appreciated.

Regards,
Sunag R A.