void CU6b82Dlg::OnDemo()

{
UpdateData (TRUE);


{

m_Sequence="BBB";

m_Sequence2="AAA";

m_Sequence3="CDEF";

m_Sequence4="abcde";



}
UpdateData (FALSE);
}


this is how it appears if the button had a single function...

however I need to make it so when demo is pressed again this firstly clears then a new set of letter appears in the sequences