VB transform trouble

I have a curve, I draw perpendicular planes (frames) and in each plane I want to put a point using polar coordinates.

My first attempt to do this was doing point at parameter curve, then move point by frames.Xaxis . But I could not.

Now I tried to do it by points in polar coordinates in the plane WorldXY to orient points to plane frames. But it does not work for me.

Could anyone tell me I'm wrong?

   For i as int32 = 0 To N - 2
      Dim t As Transform = transform.ChangeBasis (plane.WorldXY, frames.item (i))
      pts.item (i) .transform (t)
      newpts.add (pts.item (i))
    Next

The result is newpts in its original position (of pts, so no change). However, if I print t, get this information, which makes me conclude that there is a transformation, but does not apply to pts.
      
0. R0 = 0. (0.978619276538596,0.205680119571811,0, -0.835499479690299), R1 = (- 0.139260647800845,0.662597603914643,0.735915000024231, -0.484446574911868), R2 = (0.151363085199673, -0.720180604917613,0.67707393447048,0.526547372506406), R3 = (0,0,0 , 1)

1. R0 = (0.980103168397586,0.198342718995972,0.00761216909280271, -0.833997919373362), R1 = (- 0.150647997457897,0.718355747671146,0.679168757121347, -0.501880684937877), R2 = (0.129239932524504, -0.666802208761424,0.733942677756205, -0.0974402469745317), R3 = (0,0, 0.1)

(...)

Any help please?

Thx.