Why the functions doesn't execute completely

RILCELLTOWERINFO* pCellInfo = (RILCELLTOWERINFO*)lpData;

CCellTower *pCellTower = (CCellTower*)cbData;
if(pCellTower != NULL)
{
    pCellTower->m_pCellTowerInfo = pCellInfo;
}

RILCELLTOWERINFO* pCellInfo = (RILCELLTOWERINFO*)lpData;

CCellTower *pCellTower = (CCellTower*)cbData;
if(pCellTower != NULL)
{
    //pCellTower->m_pCellTowerInfo = pCellInfo;
}