diff --git a/Klassen.py b/Klassen.py
index a3790dd..92ca796 100644
--- a/Klassen.py
+++ b/Klassen.py
@@ -1,5 +1,5 @@
 class Formel:
-    def __init__(self, name, a=Groesse(None, None, True, 0), b=Groesse(None, None, True, 0),
+    def __init__(self, name, i, a=Groesse(None, None, True, 0), b=Groesse(None, None, True, 0),
                  c=Groesse(None, None, True, 0), d=Groesse(None, None, True, 0), e=Groesse(None, None, True, 0),
                  f=Groesse(None, None, True, 0), g=Groesse(None, None, True, 0), z=Groesse(None, None, True, 0),
                  y=Groesse(None, None, True, 0), x=Groesse(None, None, True, 0)):
@@ -14,6 +14,7 @@ class Formel:
         self.y = y
         self.x = x
         self.name = name
+        self.i = i
         self.liste = []
         for var in [self.a, self.b, self.c]:
             if var.konst is False: