pass values between vb.net forms

I have a form that calls another form.   I can a variable in form2 before calling the showdialog on the form2 and it uses it in code in form 2.  However I would like to pass a value back to the callingform but that seems to be a no go.  I have enclosed the code to call form2 and the code that is supposed to update a variable on form1 before going back to the code.  Please checkout and let me know why myQty variable is 0 when I return from form2

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Dim myKeyboard As New frmKeyboard
        Dim mQty As Integer = 0

        myKeyboard.mKeyType = 2
        myKeyboard.mItemDesc = Button1.Text
        myKeyboard.ShowDialog()

        FillListBox(Button1.Text, Button1.Tag, myQty)
    End Sub

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Private Sub cmdEnter_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdEnter.Click
        FrmInspection.myQty = CInt(txtQty.Text)
        Me.Close()

    End Sub

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