ParentConstraint.rotationAxis

Description

The rotation axes affected by the ParentConstraint.

Use this property to restrict the rotation of the constrained object on a particular axis.

using UnityEngine.Animations;

public class ConstraintAxis
{
    public void ConstrainOnlyOnXY(ParentConstraint component)
    {
        component.rotationAxis = Axis.X | Axis.Y;
    }
}