How to modify the Rotation value of unity
Rotation modification of transform
transform.Rotation cannot directly = new Vector3(0,0,0) like position and scale
You can use:
transform.localRotation.eulerAngles to get the angle
transform.localRotation = Quaternoin.Euler(new Vector3(0,0,0)) and modify it
. Note that the range of Euler angles is: 0-180 -180 - 0