diff --git a/pattern.py b/pattern.py
index 0b8e766..16222c2 100644
--- a/pattern.py
+++ b/pattern.py
@@ -80,6 +80,8 @@ def default(index, tick):
 
 
 def pat(index, tick, previous_values):
+    this.values['tick'] = tick
+    this.values['index'] = index
     if this.pattern != None:
         for i in range(len(this.pattern)):
             name = this.pattern[i]['instruction']['name']