I need help with this code! sorry my eglish :(

local fisica = require(“physics”)

physics.start()

system.activate(“multitouch”)

physics.setGravity(0,9.8)

local fondo display.newImage (“fondo.png”)

local suelo = display.newImage (“suelo.png”)

suelo:setReferencePoint( display.BottomLeftRferencePoint)

suelo.x, suelo.y = 160, 470

local paredIz = display.newRect( 2, -0, 1, 480 )

physics.addBody (paredIz, “static”, {friction = 1.0, density=1.0, bounce=0})

local paredDer = display.newRect( 319, -0, 1, 480 )

physics.addBody (paredDer, “static”, {friction = 1.0, density=1, bounce=0})

local bola = display.newCircle( 100, 100, 20 )

physics.addBody (bola, {friction = 0.3, density=1, bounce=0.8, radius=20 })

local sueloForma = {-240,-20, 240, -20, 240, 20, -240, 20}

physics.addBody (suelo, “static”, {friction = 1.0, density=1.0, bounce=0, shape= sueloForma})

function moveBola( event )

    if event.phase == “began” then 

        display.getCurrentStage( ):setFocus(bola)

        elseif event.phase == “ended” then

        bola:applyLinearImpulse(event.xStart - event.x, event.yStart - event.y, bola.x, bola.y)

      display.getCurrentStage( ):setFocus(nil)

    end

end

bola:addEventListener( “touch”, moveBola)

Well i try to use this function from this video but i cant make this work, i am new in lua. probably this its really easy, but pls some one can help me?, i need to do a shot like angry birds.

NOW ITS WORKING!

ALL ITS OK

Thanks!

 ( http://www.youtube.com/watch?v=LBnBml2KFFk )