public string wordDownStr //сюда вводится текст и подтверждается UI Button
public string[] arrayInputWords;

void Update()
    {
         arrayInputWords = new string[1];
        for (int i = 0; i < arrayInputWords.Length; i++)
        {
            arrayInputWords[i] = wordDownStr;
        }
    }
}

using UnityEngine;
using UnityEngine.UI;
using System.IO;
using UnityEngine.EventSystems;

public class addWord : MonoBehaviour, IPointerDownHandler, IPointerUpHandler
{
    string pathToFile = "C:/rus.txt";
    string[] slovar = File.ReadAllLines("C:/rus.txt");
    public Text wordDown;
    public string wordDownStr;
    bool pressed = false;

    public void OnPointerDown(PointerEventData eventData)
    {
        pressed = true;
    }

    public void OnPointerUp(PointerEventData eventData)
    {
        pressed = false;
    }

    void Update()
    {
        wordDownStr = wordDown.text;
        if (pressed)
        {
            File.AppendAllText(pathToFile, Environment.NewLine);
            File.AppendAllText(pathToFile, wordDownStr);
        }
    }
}

using UnityEngine;
using UnityEngine.UI;
using System.IO;

public class addWord : MonoBehaviour
{
    string pathToFile = "C:/rus.txt";
    public Text wordDown;
    public string wordDownStr;

    public void rec()
    {
        wordDownStr = wordDown.text;
        File.AppendAllText(pathToFile, wordDownStr);
        File.AppendAllText(pathToFile, Environment.NewLine);
    }
}

public GameObject a;
public GameObject b;

public bool select = false;

void Update()
{
   selectedTest();
}

public void selectedTest()
{
       if (Input.GetKey(KeyCode.K))
        {
            select = !select;
            if (select == true)
            {
                a.SetActive(false);
                b.SetActive(true);
                Debug.Log("1");
            }
            else
            {
                a.SetActive(true);
                b.SetActive(false);
                Debug.Log("2");
            }
        }
}

public bool handUp = false;

void OnTriggerStay(Collider other)
    {
        if (other.tag == "hand")
        {
            handUp = !handUp;  

            if (Input.GetKeyDown(KeyCode.G))  
            {
                if (handUp == true)                         
                {
                    obj_Rigidbody.freezeRotation = true;
                    obj_Rigidbody.constraints = RigidbodyConstraints.FreezePosition;

                    transform.rotation = new Quaternion(hand.transform.rotation.x, hand.transform.rotation.y,
                    hand.transform.rotation.z, hand.transform.rotation.w);

                    transform.position = new Vector3(hand.transform.position.x, -2.2f, hand.transform.position.z);
                    
                    transform.parent = GameObject.Find("hand").transform;

                    Debug.Log("1");
                }
                else
                {
                    obj_Rigidbody.constraints = RigidbodyConstraints.None;  

                    transform.parent = null;

                    Debug.Log("2");

                }
            }
        }
    }