diff --git a/Examples/walmart.s b/Examples/walmart.s
index 0c4c1e0..461b8e9 100644
--- a/Examples/walmart.s
+++ b/Examples/walmart.s
@@ -65,15 +65,33 @@ each(var p in fetchPage)
     from expand (p.first to p.last)
 }
 
-create buffer product(url string, description string, price string)
+create buffer product(url string, detailUrl string, description string, price string, upc string)
 
 insert overwrite product
 select
     url,
+    'http://www.walmart.com' + pick '.prod-ProductCard--Image a' take attribute 'href',
     pick '.prod-ProductTitle div',
-    pick '.Price-characteristic' + '.' + pick '.Price-mantissa'
-from download page (select url from urls) with (js|thread(5))
+    pick '.Price-characteristic' + '.' + pick '.Price-mantissa',
+    ''
+from download page (select url from urls) with (js|thread(10))
 where nodes = '.search-result-gridview-item'
 
+
+update p
+set p.upc = u.upc
+from (select upc, url
+	from download page (select detailUrl from product) with (js|thread(10)) => {
+	"
+		var primaryProductId = __WML_REDUX_INITIAL_STATE__.product.primaryProduct;
+	
+		var primaryProduct = __WML_REDUX_INITIAL_STATE__.product.products[primaryProductId];
+	
+		return [{upc:primaryProduct.upc, url:url}];
+	"
+	}) u
+join product p on p.detailUrl = u.url
+
+
 select *
 from product
\ No newline at end of file
diff --git a/Pickaxe.Runtime/Http.cs b/Pickaxe.Runtime/Http.cs
index 3ba1126..e56c9e4 100644
--- a/Pickaxe.Runtime/Http.cs
+++ b/Pickaxe.Runtime/Http.cs
@@ -71,23 +71,30 @@ private static RuntimeTable<DynamicObject> ProcesJson(IHttpRequestFactory factor
                 json = string.Empty;
 
             dynamic objectValue = JsonConvert.DeserializeObject(json);
-            if (!(objectValue is JArray))
-                throw new InvalidOperationException("must return array from java script");
-
             var dynamics = new List<DynamicObject>();
-            var properties = new List<Dictionary<string, object>>();
-            foreach (var v in objectValue)
+
+            if (objectValue != null)
             {
-                var dynamic = new DynamicObject();
-                Dictionary<string, object> values = v.ToObject<Dictionary<string, object>>();
+                if (!(objectValue is JArray))
+                    throw new InvalidOperationException("must return array from java script");
 
-                foreach (var p in values.Keys)
-                    dynamic.Add(p, values[p].ToString());
+                var properties = new List<Dictionary<string, object>>();
+                foreach (var v in objectValue)
+                {
+                    var dynamic = new DynamicObject();
+                    Dictionary<string, object> values = v.ToObject<Dictionary<string, object>>();
 
-                dynamics.Add(dynamic);
+                    foreach (var p in values.Keys)
+                        dynamic.Add(p, values[p].ToString());
+
+                    dynamics.Add(dynamic);
+                }
             }
 
             var table = new RuntimeTable<DynamicObject>();
+            if(dynamics.Count == 0)
+                dynamics.Add(new DynamicObject());
+
             table.SetRows(dynamics);
             return table;
         }
diff --git a/Pickaxe.Runtime/Internal/SeleniumExecJsHttpWire.cs b/Pickaxe.Runtime/Internal/SeleniumExecJsHttpWire.cs
index 0c164f3..4430a88 100644
--- a/Pickaxe.Runtime/Internal/SeleniumExecJsHttpWire.cs
+++ b/Pickaxe.Runtime/Internal/SeleniumExecJsHttpWire.cs
@@ -48,7 +48,7 @@ protected override object RunPostDownload(IWebDriver driver)
 
 ", _js);
 
-            string json = (string)jsExecutor.ExecuteScript(script, driver.Url);
+            string json = (string)jsExecutor.ExecuteScript(script, Url);
             return json;
         }
     }
diff --git a/Pickaxe.Studio/Highlighting/Scrape.xshd b/Pickaxe.Studio/Highlighting/Scrape.xshd
index 3bd9e89..45469ec 100644
--- a/Pickaxe.Studio/Highlighting/Scrape.xshd
+++ b/Pickaxe.Studio/Highlighting/Scrape.xshd
@@ -14,6 +14,12 @@
         <End>'</End>
       </Span>
 
+
+      <Span name="StringLiteralQuotes" color="Red">
+        <Begin>"</Begin>
+        <End>"</End>
+      </Span>
+
       <Span name = "LineComment" color="Green" stopateol = "true">
         <Begin>//</Begin>
       </Span>