Why the compile error? WorkCodes is CArray of CWorkCode. ERROR READS "afxtempl.h(443) : error C2582: 'CWorkCode' : 'operator =' function is unavailable" Would appreciate any help! Thanks!

void CTimeView::OnEditAddEdit()
{
CTimeDoc* pDoc = GetDocument();
CWorkCodeDialog wcd;
wcd.DoModal();
CWorkCode wc(wcd.m_strWorkCode, wcd.m_strDescription);
pDoc->WorkCodes.Add(wc);<-------COMPILE ERROR!

}