How to play FIBA in season mode?

Hi. Just want to ask. maybe someone knows what to do in DB editor to put 8 FIBA teams and 4 NBA teams (renamed to "Africa", "Russia" "Yugoslavia" "Latin American" teams) in a season mode?

I tried in editor and put FIBA teams to nba divisions and conferences but its not workin. when i tried to run a season mode in menu, this happening: "the number of teams in divisons and conference must be the same". and its the same in editor. well, maybe someone knows what to do.

There's your answer; there are certain requirements you need to fulfil for a custom roster to work in Season Mode. Dynasty Mode will only support 30 teams.