Adding an item to sidebar by editing com.apple.sidebarlists.plist using objective C

I have an application which has to be shown on Users list of Finder's sidebar on installation.

So on installation code, I have added one more dictionary object to Library -> Preferences-> com.apple.sidebarlists.plist.. i.e., in useritems -> customListItems of plist.

If I see the plist addition everything looks correct.

On relaunching the Finder.app, it is expected to ge开发者_JAVA技巧t that item added in the side bar of Finder. But I am not able to see any change happening instead the plist is overridden with the old items. I tried trashing Finder cache and running the code. still no luck :( Any pointers to what I am missing please. Thanks in advance!

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Use LSSharedFileList. Add an item to the Finder/Save dialog sidebar

-(void) addPathToSharedItem:(NSString *)path
{
CFURLRef url = (CFURLRef)[NSURL fileURLWithPath:path]; 

// Create a reference to the shared file list.
LSSharedFileListRef favoriteItems = LSSharedFileListCreate(NULL,
                                                           kLSSharedFileListFavoriteItems, NULL);
if (favoriteItems) {
    //Insert an item to the list.
    LSSharedFileListItemRef item = LSSharedFileListInsertItemURL(favoriteItems,
                                                                 kLSSharedFileListItemLast, NULL, NULL,
                                                                 url, NULL, NULL);
    if (item){
        CFRelease(item);
    }
}   

CFRelease(favoriteItems);
}