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    <p>This stumped me till today. The main problem is that you're making newdice a Corona display.newText object and then reassigning it to be a dice object. All the Corona objects act like ordinary tables, but they're actually special objects. So you have two options:</p> <p>A. Don't use classes and OOP. As your code is now, there's no reason to have dice be a class. This is the option I'd go with unless you have some compelling reason to make dice a class. Here's how you would implement this option</p> <pre><code>--dice not a class-- local dice = {} local function taps(event) event.target.b = false print("works") end function dice.new( posx, posy) -- constructor local a=math.random(1,6) --local b= true local newdice = {} newdice = display.newText(a, display.contentWidth*posx, display.contentHeight*posy, nil, 60) newdice:addEventListener("tap", taps) newdice.b = true return newdice end </code></pre> <p>or B. Use a "has a" relationship instead of an "is a" relationship for the display object. Since you can't make them both a dice object and a display object, your dice object could contain a display object. Here's how that would look.</p> <pre><code>--dice class-- local dice = {} local dice_mt = { __index = dice } -- metatable local function taps(event) event.target.b = false print("works") end function dice.new( posx, posy) -- constructor local a=math.random(1,6) --local b= true local newdice = {} newdice.image = display.newText(a, display.contentWidth*posx, display.contentHeight*posy, nil, 60) newdice.image:addEventListener("tap", taps) newdice.b = true return setmetatable( newdice, dice_mt ) end </code></pre> <p>There were some other problems as well. In your taps function event handler you have to use event.target.b instead of self.b. Also, in dice.new b is a local variable so it's not a member of your dice class.</p>
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    1. COin main.lua i used : grid[i][j].image:addEventListener("tap",dicetap) with a dicetap fn declared before hand.
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