How to freeze axis of rigidbody in unity.physics?

Question is in the title:

I do something like this:

Code (CSharp):

1. Entities.WithAllReadOnly<PlayerMarker>()
2.                 .ForEach((ref Translation position, ref PhysicsVelocity velocity, ref Rotation rotation) =>
3.                 {
4.                     if (Input.GetKeyDown(KeyCode.W))
5.                     {
6.                         velocity.Linear = math.forward(rotation.Value) * 10;
7.                     }
8.                 });

How do i freeze the rotation in the X and Z axis?

 

In the PhysicsMass component of the entity, there will be a float3 field called InverseInertia. Set the X and Z components of that field to 0.

 

Thank you for your response... somehow my object is still a little bit tilting.. do i need to specify anything else? Do i need to apply this value every frame or is a single time enough?