Replacing the delimiter is also required for standard communties. Otherwise the import and export of prefixes will not work:

Not working:
            bgp_community.add((49697:2200));
            bgp_large_community.add((49697,0,2200));


Working:
            bgp_community.add((49697,2200));
            bgp_large_community.add((49697,0,2200));