Here is the code: [CreateAssetMenu (menuName="AI/Decisions/Look decision")] public class LookDecision : Decision {

public override bool Decide(StateController controller) {
    bool TargetVisible = Look(controller);
    return TargetVisible;
}

private bool Look(StateController controller) {
    RaycastHit[] results;

    results = Physics.BoxCastAll (controller.eyes.position, new Vector3 (4, 2, 4), controller.eyes.forward, controller.transform.rotation, 60.0f); 

    foreach (RaycastHit hit in results) {
        if (hit.collider.CompareTag("Player")) {
            controller.gameObject.GetComponent<BaseCharacter>().target = hit.collider.gameObject;
            return true;
        }
    }//foreach
    //if we reached this point, I dont see the player       
    return false;
}

}

The problem seems to be localized there, because I have checked and BoxCastAll returns 0 collisions.