new idea for prothetic leg(plz someone help making the prototype

grabcad

what will happen during waking :1-during standing without any motion (neo-magnet 3) is (pushing neo-4) away and nothing is happing.2-when moving as shown in the video the black bar attached to the foot will push the blue bar which will push neo-2 in to face the magnetic field on neo-1 which will push it away and with pushing neo-2 away the whole leg will be pushed away and it will be raised from the ground.3-ofcours there will be a question what happened to the repulsing force between neo 3 and neo 4?The answer is with controlling the cross section and the distance of neo-1 and 2 the repulsing force between the will be stronger than neo 3 and 4.So there will be another question what will make the return of the leg to original standing position ?Here comes the roll of the spring it will push neo-2 away from neo 1 so there will be no repulsing force between them which allow the neo3 to push neo 4 and the ((swing of the leg will happen)) and the leg will return to its original position.-also the spring will push blue bar and black bar back to the original position.