Trying To Do A Sword Attack Animation Using Parents, Local Position And Local Rotation.

First i declare the sword object and the arm object that holds the sword in the editor.

 public Transform sword;
 public Transform swordarm;

If the player is not attacking then the sword is in the sheath.

 if (attacking == 0)
 {
 sword.parent = transform;
 sword.transform.localPosition = new Vector3(-6,-2,2);
 sword.transform.localRotation = Quaternion.Euler(0,90,0);
 }

After a certain amount of time the sword is in the player's hand. The animations are done in blender. I just want to attach the sword to the player's arm after the animation has reached a certain point.

 if(animation[attack.name].time>0.4*animation[attack.name].length && attacking == 1)
 {
 sword.parent = swordarm; 
 sword.transform.localPosition = new Vector3(-3.5f,0.8f,-1);
 sword.transform.localRotation = Quaternion.Euler(80,45,225);
 }

The problem is that the localRotation and localPosition are not changing.