         }
         
         // Generate the url
-        let requestUrlString = url + qMark + visualFeatures + computedDetails
+        let requestUrlString = url + qMark + computedVisualFeatures + computedDetails
         let requestUrl = NSURL(string: requestUrlString)
 
         

    }
    
    
    /**
     This operation extracts a rich set of visual features based on the image content.
     

        
        var computedDetails: String {
            
            if details != .None {
                return "details=" + details.rawValue
            }
            else {
                return ""
