无法在Storyboard中看到文本。

我对 Corona SDK 还比较陌生，试图创建一个游戏菜单，但是当我运行代码时，文字就是不显示。我确定程序已经到达了这个文件。有什么想法吗？

local storyboard = require("storyboard")
local scene = storyboard.newScene()

display.setStatusBar(display.HiddenStatusBar)

local function ButtonTap(event)
    storyboard.gotoScene(event.target.goto, {effect = "slideDown"})
    return true
end

function scene:createScene(event)
    local group = self.view
    -->Play Button
    local PlayBtn = display.newText("Play", 0, 0)
    PlayBtn.x = display.contentHeight / 2
    PlayBtn.y = display.contentWidth / 2
    PlayBtn.goto = "Play"
    PlayBtn:addEventListener("tap", ButtonTap)
    group:insert(PlayBtn)

    -->Exit Button
    local ExitBtn = display.newText("Play", 0, 0)
    ExitBtn.x = display.contentHeight / 2
    ExitBtn.y = display.contentWidth / 2 + 60
    ExitBtn.goto = "Play"
    ExitBtn:addEventListener("tap", ButtonTap)
    group:insert(ExitBtn)
end

-- Called immediately after scene has moved onscreen:
function scene:enterScene(event)
    local group = self.view
end

-- Called when scene is about to move offscreen:
function scene:exitScene(event)
    local group = self.view
end

-- Called prior to the removal of scene's "view" (display view)
function scene:destroyScene(event)
    local group = self.view
end

scene:addEventListener("createScene", scene)
scene:addEventListener("enterScene", scene)
scene:addEventListener("exitScene", scene)
scene:addEventListener("destroyScene", scene)

return scene