how to change the rigid body constraints unity via script code example
Example 1: unity rigidbody constraints
m_Rigidbody = GetComponent<Rigidbody>();
//This locks the RigidBody so that it does not move or rotate in the Z axis.
m_Rigidbody.constraints = RigidbodyConstraints.FreezePositionZ | RigidbodyConstraints.FreezeRotationZ;
Example 2: how o free contraint in unity from script
m_Rigidbody.constraints = RigidbodyConstraints.None;