Modeless and Modal dalog window

[C++ Programming]

MFC, STUDIO 2008, MDI-project
How do set value of variable
1. from modal dialog window
into modeless window
and
2. from modeless window to modal dialog window ?

CString m_sModal(L"text for modeless dialog window");
CString m_sModeless;
CMyModeless2 - class modeless window
CAdodc_MDI - class modal window
There is pointer onto modeless class Into View class
CMyModeless2* m_pModeless;
Both dillog windows have buttons 'OK' and 'Cancel'

Thank you.