Tween2curves doesn't work on my geometry

[ct.rhino (CT)]

expecting this

get:

[11159 (Masaki)]

Hello,
Could you upload 3dm files?

[ct.rhino (CT)]

Untitled.3dm (52.0 KB)

[11159 (Masaki)]

The [CrvSeam] command allows you to adjust the Seam position and curve direction for each curve.
After adjustment, execute the [TweenCurves] command.