In Core, How to open online mode

Help
,
1

when I code :

if actor:IsA("Player") then
actor:TransferToScene("BattleScene")
end

tells "Unable to transfer players outside of online mode", but how to open online mode

3

"Does not work in preview mode or in games played locally"

image
image1082×250 31.7 KB

as your resolution, yet that is Preview Mode. Game tell me "Unable to transfer players outside of online mode" still