Getting tired of asking for this! But the missing functions: ds_list_item_is_list ds_list_item_is_map ds_map_item_is_list ds_map_item_is_map Bit us in the ass yet again!! I been asking for these for 2 years! Can you please add these to the gml language!!! the missing functions are infuriating... You obviously have the ability to give us this information since the debugger itself is aware of the content of the data structure since exploding the root id of a json ds_map also explodes the sub structure!!! Jesus, it's only 4 new functions. right now we can't deal with json files without those... aside those files we know exactly the content of.. This is EXTREMELY limiting.