local inst1 = Tween:Create(...);
local inst2 = Tween:Create(...);
local tableTweens = {};
table.insert(tableTweens,inst1);
table.insert(tableTweens,inst2);
so your table is { {Tween8}, {Tween9}, {Tween10}, {Tween11}, {Tween12}, {Tween13}, {Tween15}, }
in your loop, play is an array containing your tween ({Tween}). to play your tween, you need to index the first value of the array using [1] which is your tween to use :Play()