Potřebuji dostat string "jmeno" z formu2 do formu1

//form2
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace TextEdit01
{
public partial class startKonecPGM : Form
{
string jmeno;

public startKonecPGM()
{
InitializeComponent();
}

// Tlačítko vložit
public void btnOKJmenoPGM_Click(object sender, EventArgs e)
{
DialogResult = DialogResult.OK;
}

// Tlačítko konec
private void btnCancelJmenoPGM_Click(object sender, EventArgs e)
{
DialogResult = DialogResult.Cancel;
}

public string JmenoPGM
{
get
{
return jmeno;
}
set
{
jmeno = value;
}
}

private string jmenoPGM(string jmeno)
{
jmeno = "0 BEGIN PGM " + txtJmenoPGM.Text + " MM"
+ Environment.NewLine + Environment.NewLine +
"150 END PGM " + txtJmenoPGM.Text + " MM";
return jmeno;
}

}
}

// form1
private void btnSartKonecPGM_Click(object sender, EventArgs e)
{
startKonecPGM startKonecPGM = new startKonecPGM();
startKonecPGM.ShowDialog();

if (startKonecPGM.DialogResult == DialogResult.OK)
{
richTextBox1.SelectedText = startKonecPGM.JmenoPGM; // tady potřebuji dostat string jmeno
}
}