def ModifyBgpNumberOfRoutesNgpf( networkGroupName='', totalRoutes='' ):
    for topology in ixNet.getList(ixNet.getRoot(), 'topology'):
        for deviceGroup in ixNet.getList(topology, 'deviceGroup'):
            for networkGroup in ixNet.getList(deviceGroup, 'networkGroup'):
                currentNetworkGroupName = ixNet.getAttribute(networkGroup, '-name')
                nameMatch = re.search(r'%s' % networkGroupName, currentNetworkGroupName, re.IGNORECASE)
                if nameMatch:
                    for ipv4PrefixPool in ixNet.getList(networkGroup, 'ipv4PrefixPools'):
                        print '\nModifyBgpNumberOfRoutesNgpf: %s : totalRoutes:%s' % (ipv4PrefixPool, totalRoutes)
                        ixNet.setAttribute(ipv4PrefixPool, '-numberOfAddresses', totalRoutes)
                        ixNet.commit()
                        return

    print '\nModifyBgpNumberOfRoutesNgpf Error: No such networkGroupName: %s' % networkGroupName