Why wont this transition work?

[blockcode]
local _H = display.ContentHeight;
local _W = display.ContentWidth;

local director = require(“director”);

local mainGroup = display.newGroup();

local function main()

mainGroup:insert(director.directorView);
director:changeScene(“play”):

return true;
end

main()
[import]uid: 59735 topic_id: 16529 reply_id: 316529[/import]