dispatching events

    ------------------------
    --dispatchEvent
    -----------------------
    --[[
    I have a scenario where i have a indicator that will change its image based on the score until the score is 1000 and the indicator shows full health in form of an image
    --]]

    local scoreImg = display.newImage( "image.png" )

    local myListener = function( event )
            if event.name == "health" and event.type == "low" then
                    scoreImg.image = "image2.png"
            end
            return scoreImg
    end

    image:addEventListener( "myEventType", myListener )

    -- in side an if closure where I check the score I put i.e.

    ---------Just an example of use inside a function ----------------
     local function checkScore()
        if ( score > 500 and score < 750 ) then
                local event = { name="health", type="low" }
                scoreImg:dispatchEvent( event )
        elseif ( score > 750 and score < 900 ) then
            --whatever.....
        end
    end

Runtime:addEventListener( "enterFrame", checkScore )