diff --git a/web/API/crons.php b/web/API/crons.php
index a2b1dfa..d66d61e 100644
--- a/web/API/crons.php
+++ b/web/API/crons.php
@@ -2,7 +2,8 @@
     namespace API\cron;
 
     function all($params) {
-
+        tle($params);
+        autoFail($params);
     }
 
     function tle($params) {
@@ -36,4 +37,17 @@
         }
 
         return $updated;
+    }
+
+    function autoFail($params) {
+        $observations = new \wsos\database\core\table(\DAL\observation::class);
+        $ob           = new \DAL\observation();
+
+        $faild = $observations->query("status==? && start<?", [$ob->status->getVal("assigned"), time() - 300]);
+
+        foreach ($fob in $faild->values) {
+            $fob->status->set("fail");
+            $fob->commit(); 
+        }
+
     }
\ No newline at end of file
diff --git a/web/API/observations.php b/web/API/observations.php
index cdc959b..08f5e7d 100644
--- a/web/API/observations.php
+++ b/web/API/observations.php
@@ -132,14 +132,26 @@
 
         $adir = __DIR__ . "/../ARTEFACTS/" . $params["id"];
 
+        $fname = basename($params["fname"]);
+
         mkdir($adir, 0777, true);
-        
-        $artefacts = $obs->artefacts->get();
-        foreach ($_FILES as $file) {
-            move_uploaded_file($file["tmp_name"], $adir . "/" . $file["name"]);
-            $artefacts[] = "/ARTEFACTS/{$params['id']}/{$file['name']}";
+
+        // chunk upload file
+        if ($params["offset"] == 0) {
+            // get current artifasts
+            $artefacts = $obs->artefacts->get();
+
+            $artefacts[] = "/ARTEFACTS/{$params['id']}/{$fname}";
+
+            $obs->artefacts->set($artefacts);
+            $obs->commit();
         }
 
-        $obs->artefacts->set($artefacts);
-        $obs->commit();
+        // file pointer
+        $ifp = fopen($adir . "/" . $fname, 'ab'); 
+
+        fwrite($ifp, $params["data"]);
+    
+        // clean up the file resource
+        fclose($ifp); 
     }