diff --git a/.idea/modules.xml b/.idea/modules.xml
index 9ac0270..9fb6e7a 100644
--- a/.idea/modules.xml
+++ b/.idea/modules.xml
@@ -2,7 +2,7 @@
 <project version="4">
   <component name="ProjectModuleManager">
     <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/projekttage.iml" filepath="$PROJECT_DIR$/.idea/projekttage.iml" />
+      <module fileurl="file://$PROJECT_DIR$/.idea/Projekttage.iml" filepath="$PROJECT_DIR$/.idea/Projekttage.iml" />
     </modules>
   </component>
 </project>
\ No newline at end of file
diff --git a/Klassen.py b/Klassen.py
index c2ad221..47aac4b 100644
--- a/Klassen.py
+++ b/Klassen.py
@@ -59,7 +59,7 @@ class Formel:
             return [- ((self.formel.a**self.formel.z) * (self.formel.b**self.formel.y) * (self.formel.c**self.formel.x) + self.formel.d * self.formel.e * self.formel.f - self.formel.i), self.get_dicts()]
 
         def solve_to_z(self):
-            return [math.log((self.formel.i-self.formel.d*self.formel.e*self.formel.f-self.formel.g) / ((self.formel.b**self.formel.y) * (self.formel.c**self.formel.x)), self.formel.a), self.get_dicts()]
+            return [math.log((self.formel.i.wert-self.formel.d.wert*self.formel.e.wert*self.formel.f.wert-self.formel.g.wert) / ((self.formel.b.wert**self.formel.y.wert) * (self.formel.c.wert**self.formel.x.wert)), self.formel.a), self.get_dicts()]
 
         def solve_to_y(self):
             return [math.log((self.formel.i-self.formel.d*self.formel.e*self.formel.f-self.formel.g)/((self.formel.a**self.formel.z) * (self.formel.c**self.formel.x)), self.formel.b), self.get_dicts()]