diff --git a/inc/example.class.php b/inc/example.class.php
index 882706d..9ba1f3c 100644
--- a/inc/example.class.php
+++ b/inc/example.class.php
@@ -119,7 +119,9 @@ class PluginExampleExample extends CommonDBTM {
    static function cronSample($task) {
 
       $task->log("Example log message from class");
-      $task->setVolume(mt_rand(0,$task->fields['param']));
+      $r = mt_rand(0,$task->fields['param']);
+      usleep(1000000+$r*1000);
+      $task->setVolume($r);
 
       return 1;
    }