Y_PREV = 0          ' memorize position of motor C

For X=1 To 360      ' move steps of single degrees
  Y = 50*Math.Sin(X/180*Math.PI)     ' calculate Y dependent of X
  Y = Math.Round(Y)      ' rounding (motor can only go to integer values)

  Y_INC = Y - Y_PREV    ' calculate the distance from current to new position
  Y_PREV = Y            ' memorize the new position for next iteration

  Motor.SchedulePower("A",30,0,1,0,"true")  ' move A by one degree
  
  If Y_INC>0 Then              ' move motor C either forward
    Motor.SchedulePower("C",30,0,Y_INC,0,"true")
  Else                         ' or backwards
    Motor.SchedulePower("C",-30,0,Y_INC,0,"true")
  EndIf

  Motor.Wait("AC")  ' wait until both motors have reached the position
EndFor