diff --git a/flamapy/metamodels/pysat_metamodel/operations/pysat_satisfiable_configuration.py b/flamapy/metamodels/pysat_metamodel/operations/pysat_satisfiable_configuration.py
index fc550a0..3763f54 100644
--- a/flamapy/metamodels/pysat_metamodel/operations/pysat_satisfiable_configuration.py
+++ b/flamapy/metamodels/pysat_metamodel/operations/pysat_satisfiable_configuration.py
@@ -36,22 +36,23 @@ def execute(self, model: VariabilityModel) -> 'PySATSatisfiableConfiguration':
             assumptions = []
             for feature, selected in self.configuration.elements.items():
                 if selected:
-                    assumptions.append(sat_model.variables[feature.name])
+                    assumptions.append(sat_model.variables[feature])
                 else:
-                    assumptions.append(-sat_model.variables[feature.name])
+                    assumptions.append(-sat_model.variables[feature])
         else:
-            missing_features = [feature for feature in self.configuration.elements.keys() if feature.name not in sat_model.variables.keys()]
+            missing_features = [feature for feature in self.configuration.elements.keys() if feature not in sat_model.variables.keys()]
             
             if missing_features:
-                print("The features that are missing are:", [feature.name for feature in missing_features])
+                print("The features that are missing are:", [feature for feature in missing_features])
                 print("The feature model contains the following features:", list(sat_model.variables.keys()))
                 self.result = False
                 return self
-                   
-            print(self.configuration.elements.items())
+            
+
             assumptions = []
             for feature in sat_model.features.values():
-                if self.configuration.has(feature):
+                
+                if feature in self.configuration.elements.keys():
                     assumptions.append(sat_model.variables[feature])
                 else:
                     assumptions.append(-sat_model.variables[feature])
diff --git a/setup.py b/setup.py
index c1259c2..199d2b1 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
 
 setuptools.setup(
     name="flamapy-sat",
-    version="2.0.0.dev0",
+    version="2.0.0.dev1",
     author="Flamapy",
     author_email="flamapy@us.es",
     description="flamapy-sat is a plugin to flamapy module",
@@ -22,9 +22,9 @@
     ],
     python_requires='>=3.9',
     install_requires=[
-        'flamapy-fw~=2.0.0.dev0',
-        'flamapy-fm~=2.0.0.dev0',
-        'python-sat>=0.1.7.dev6'
+        'flamapy-fw~=2.0.0.dev1',
+        'flamapy-fm~=2.0.0.dev1',
+        'python-sat>=0.1.7.dev1'
     ],
     extras_require={
         'dev': [
@@ -36,6 +36,6 @@
         ]
     },
     dependency_links=[
-        'flamapy~=1.6.0.dev0',
+        'flamapy~=2.0.0.dev1',
     ]
 )