Restart a function from another controller

Hello guys !

I have problem to restart a function defined in the principal view (index.js) from a separated controller. I work with Alloy and Titanium 3.2.2.GA (for Android)

Please let me explain :

The principal view (index.xml) contain the button 'test', with evenement onClick="openLevel"

<Alloy>
    <Window class="container">
        <View id="headerMain">
            <Label id="lblScore" class='headerMainLabel' >Score</Label>
            <Label id="lblNiveau" class='headerMainLabel' >Niveau</Label>
        </View> 
 
        <View id="middleMain">
            <ImageView  id="imgMiddle"></ImageView>
        </View> 
 
        <View id="bottomMain">
            <Button  id="start">START ! </Button>
                <Button  id="test" onClick="openLevel">TEST</Button>
            <Button  id="niveau" onClick="openNiveau">TEST</Button>
        </View> 
 
    </Window>
</Alloy>

I defined the function "openLevel" in index.js like below. Scrol is a scrollableView defined into "test.xml". The page change after x seconds... simple This code is OK.

var Scrol = Alloy.createController('Test') ;
 
function openLevel(e) {
//  Open the scrolview and change the image
    Scrol.setPage(0);
    Scrol.openScrol($.index);
    Scrol.im00.image = "/mer007.jpg" ;
 
//  Change the view after 2 seconds
    var u = setTimeout(function(e){
        Scrol.setPage(1);
    },2000);    
 
};

I defined clickable Imageview on the Page 1 of the scrollableView , This Image have evenement "onClick="ClicIm1" (Function ClicIm1 is defined into "test.js")

function ClicIm1(e) {
    // When user clic here, I want to close the controller "Test"
    // And restart the function "openLevel" defined in index.js
    // and also replace the image (Scrol.im00.image = "/mer007.jpg" --> "/mer008.jpg")
}

My question is : How to do to restart the function "OpenLevel" defined into index.js ?... (We are into "test.js" and the function is into "index.js"). and also change the image into tab 0 ?

Thanks in advance