It really is challenging for me to guess your intention. On just one hand you're saying that both a and b are community (no main underscore within their names) so I should theoretically be permitted to entry/mutate (get/set) both of those. But Then you really specify an specific mutator only https://emperiumgurugram.in/emperium-premio-sector-37c-gurgaon-urban-elegance-with-seamless-connectivity/