trying to add a column with sub value

hi i am trying to add a column that has sub value i follwed whats on the settings but it wont give the result.

like this one

** If metavalue contains sub-value you want to show you can use ! to access object you indexer key and . to acces prperty like: _some_meta.subprop!arrkey_or_index would correspond to: _some_meta->subprop.

** For assoc arrays with has keys you can use * for wilcard property so _some_meta.subprop!arrkey_* would also catch _some_meta->subprop.

so i created _my_meta.itsname!arrkey_or_index and _my_meta->itsname but it wont work i am trying to display _ignitewoo_auction_settings[condition] what should be the correct syntax.

Any answers to this? need it urgently

this one ignitewoo_auction_settings[condition] and ignitewoo_auction_settings[starting_bid]