I am displaying a single png image on screen which contains various levels that the player can tap on.
I create the image using:

```
local levelsImage = display.newImage("assets/levelmap-levels.png", 0, 0, true)

```

I then overlap circles on top of each level as follows (*levels* is a table containing coordinates and tap radius for each level):

```
for i,level in ipairs(levels) do
    local levelTapCircle = display.newCircle(level.x, level.y, level.tapRadius)
    levelTapCircle.level=level -- attach the level info to the object so we know which level was tapped
    levelTapCircle.alpha=0.3
    myGroup:insert(levelTapCircle)
end

```

Attach the tap event handler as follows

```
levelTapCircle:addEventListener("tap", levelTapped)

```

In the levelTapped function I simply print the tap coordinates to the output console to prove that the event handler was invoked.

If the circles are visible (i.e. when alpha>0), then the event is raised and the levelTapped function is called. However, if I change the alpha value to 0 in order to hide the circles, the tap event is not called.

```
levelTapCircle.alpha=0

```

The following can also be used to hide the circles, but it also results in the tap event handler not being invoked:

```
levelTapCircle.isVisible = false

```

**My question is:**

Is it possible to receive tap events from hidden displayObjects (circles in this case)? 
If not, how can I receive tap events from specific circular areas on the image, but without actually displaying the circles?