How to pass an array from one form to another?

Question

Windows Forms

Created 2 WinForms forms, I want to transfer an array from one form to the second.
To do this, I declared a pointer to an integer in a separate file, in the first form I fill it in, and in the second I want to display it.
The file in which the pointer is declared. Decl.h

#pragma once
#ifndef DECL
#define DECL

int *crit_arr;

#endif

Main form. MyForm.h

// 
#pragma once
#include "Decl.h"

// функция заполнения массива внутри класса MyForm
void get_Crit() {
      crit_arr[0] = crit_arr[3] = crit_arr[8] = 1;
      crit_arr[1] = Convert::ToInt32(textBox1->Text);
      crit_arr[2] = Convert::ToInt32(textBox2->Text);
      crit_arr[5] = Convert::ToInt32(textBox3->Text);
      crit_arr[3] = 1 / crit_arr[1];
      crit_arr[6] = 1 / crit_arr[2];
      crit_arr[7] = 1 / crit_arr[5];
    }
// Кнопка, по которой открывается вторая форма
private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
    crit_arr = new int[9];
    get_Crit();
    CritTable^ F2 = gcnew CritTable(this);
    F2->Show();
  }

Second form CritForm.h

#pragma once
#include "Decl.h" // ругается при наличии именно на этот include
// Конструктор, принимающий первую форму
public:
    CritTable(System::Windows::Forms::Form ^ frm)
    {
      InitializeComponent();
      mainform = frm;
    }
//  функция, которая вывод 1й элемент массива во второй форме.
private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
    int arr[9];
    arr[0] = crit_arr[0];
    textBox1->Text = Convert::ToString(arr[0]);
  }

In this situation, when compiling, I get an error:
C2065: crit_arr: undeclared identifier.
If you remove everything about the array from the function in the second form, then it throws an error:
LNK1169 and LNK2005 ...
how do you advise me to do it?