             let similarController = ViFindSimilarViewController()
             
             params.limit = self.limit
+            // for retriveing additional meta data e.g. for displaying in detail page
+//            params.fl = ["category"]
             
             similarController.searchParams = params
             

    // MARK: ViSearchViewControllerDelegate
    func didSelectProduct(sender: AnyObject, collectionView: UICollectionView, indexPath: IndexPath, product: ViProduct) {
        alert(message: "select product with im_name: \(product.im_name)" )
    }
    
    func actionBtnTapped(sender: AnyObject, collectionView: UICollectionView, indexPath: IndexPath, product: ViProduct){

            // upload higher res image i.e. max 1024
            params.img_settings = ViImageSettings(setting: .highQualitySetting)
            params.limit = self!.limit
            // for retriveing additional meta data e.g. for displaying in detail page
            // params.fl = ["category"]
            
            controller.searchParams = params
            
            controller.croppingEnabled = true
