Mesh.ExtrudePolyCurv MeshTool. Don't get what I expect

Geometry
1

See question marks in the picture.
I want the mesh to follow the PolyCurve, No more no less.

Temp
Temp1215×721 243 KB
testMTextrude.dyn (33.7 KB)

2

if you get around the problem?

image
image1199×533 55.8 KB

3

@Akli.baliche Thank’s a lot!
Your suggestion gives me what I want.