Android TableView show problem

Titanium SDK: 3.1.3 G.A. Platform & version: iOS 6.1 Device: iOS simulator Host OS: OSX 10.8++ Hi guys, i'm developing a cross-platform app with titanium studio.

I have problems with dynamic table view on Android; i can't see data from json in the table view even if are correctly fetched from json.

I have this SEARCH.xml

<Alloy>
    <Tab id="searchTab" icon="ios_icons/search.png" activeIcon="ios_icons/search_active.png">
        <Window id="searchWin" title="Search">      
            <TextField id="searchText"></TextField>
            <Button id="searchBar" onClick="searchButton">Search</Button>           
            <Label id="archeologia">Archeologia</Label>
            <Button id="checkbox_archeologia" value="Archeologia" backgroundImage='ios_icons/checkbox.png'></Button>
 
            <Label id="identita">Identità</Label>
            <Button id="checkbox_identita" value="Identita" backgroundImage='ios_icons/checkbox.png'></Button>
 
            <Label id="cultura">Cultura</Label>
            <Button id="checkbox_cultura" value="Cultura" backgroundImage='ios_icons/checkbox.png'></Button>
            <TableView id="searchTableView" filterAttribute="title" onClick="showItems" itemImage="">
 
            </TableView>
        </Window>
    </Tab>
</Alloy>

SEARCH.JS

var rowID = 0;
search(rowID);
 
function search(rowID){
 
        var collection; 
 
        if(rowID == "4"){
            collection = Alloy.createCollection("circuiti_archeologia"); 
        }else if(rowID == "28"){
            collection = Alloy.createCollection("circuiti_cultura"); 
        }else if(rowID == "27"){
            collection = Alloy.createCollection("circuiti_identita");   
        }else if(rowID == 0){           
            collection = Alloy.createCollection("circuiti");
        }
 
        collection.fetch({
 
            success : function(){
 
                var id, name, description, siti, name_length, description_length, image ,row, rootId, rightImage, nameColor, top;
                var rowData = [];
                rootId = rowID;
 
                _.each(collection.models, function(element, index, list){
 
                    id = element.attributes.id;             
                    name = element.attributes.name;
                    description = element.attributes.description;
                    image = element.attributes.image;
                    siti = element.attributes.siti; // c'è solo nella VISTA CIRCUITI
 
                    description_length = description.length;
                    name_length = name.length;
 
                    if(name_length >= 50 && name_length <70){
                        top = "35%";
                    }else if(name_length >= 70){
                        top = "45%";
                    }else if (name_length < 70 && description_length !=0){
                        top = "20%";
                    }else if(name_length < 70 && description_length == 0){
                        top = "15%";
                    }
 
 
                    if(rootId == 4){
                        rightImage = "ios_icons/right-arrow-viola.png";
                        nameColor = "#782661";
                    }else if(rootId == 28){
                        rightImage = 'ios_icons/right-arrow-turchese.png';
                        nameColor = "#0DA99D";
                    }else if (rowID == 27){
                        rightImage = "ios_icons/right-arrow-orange.png";
                        nameColor = "#F39200";
                    }else{
                        rightImage = "ios_icons/right-arrow-viola.png";
                        nameColor = "#000";
                    }
 
                    var payload={
                        rootId: rootId,
                        rowId: id,
                        itemName: name,
                        itemDesc: description,
                        itemDescTop: top,
                        rightImage: rightImage,
                        itemImage: image,
                        nameColor: nameColor,
                        siti: siti,
                        height: ""
                    };
 
                    row=Alloy.createController('row_search',payload).getView();
                    rowData.push(row);
 
                    $.searchTableView.data=rowData;
 
                });
            },
            error : function(){
                Ti.API.error("hmm - this is not good!");
            }
 
        });
 
    }

<Alloy>
    <TableViewRow id="row_search" rowId="1" itemName="Test1" itemDesc="Test1" searchImage="" itemImage="" siti="">
        <Label id="itemName">test</Label>
        <Label id="itemDesc">test</Label>
        <ImageView id="searchImage" image="ios_icons/right-arrow-viola.png"></ImageView>
    </TableViewRow>
</Alloy>

var args = arguments[0] || {};
 
$.row_search.rightImage  = args.rightImage;
$.itemName.color = args.nameColor;
$.itemName.text = args.itemName;
$.itemDesc.text = args.itemDesc;
$.itemDesc.top = args.itemDescTop;
 
$.row_search.itemName = args.itemName;
$.row_search.itemDesc = args.itemDesc;
$.row_search.itemImage = args.itemImage;    
$.row_search.siti = args.siti;
 
if(args.height !==""){
    $.row_search.height = args.height;  
}else{
    $.row_search.height = "70%";
}
 
 
if(args.itemImage !== ""){
    $.searchImage.image = args.itemImage;
}else{
    $.searchImage.image = "ios_icons/right-arrow-viola.png";
}

Why "$.searchTableView.data=rowData" doesn't work on Android but work fine on iOS? thanks in advance.