diff --git a/examples/shields/rl/utils.py b/examples/shields/rl/utils.py
index 28936b9..78d9ee1 100644
--- a/examples/shields/rl/utils.py
+++ b/examples/shields/rl/utils.py
@@ -116,15 +116,17 @@ class MiniGridShieldHandler(ShieldHandler):
         state_valuations = model.state_valuations
         choice_labeling = model.choice_labeling
 
-        #stormpy.shields.export_shield(model, shield, "current.shield")
+        #stormpy.shields.export_shield(model, shield, self.tmp_dir_name + "/current.shield")
 
+        print(f"LOG: Starting to translate shield...")
+        tic()
         for stateID in model.states:
             choice = shield_scheduler.get_choice(stateID)
             choices = choice.choice_map
             state_valuation = state_valuations.get_string(stateID)
-            ints = dict(re.findall(r'([a-zA-Z][_a-zA-Z0-9]+)=([a-zA-Z0-9]+)', state_valuation))
-            booleans = dict(re.findall(r'(\!?)([a-zA-Z][_a-zA-Z0-9]+)[\s\t]', state_valuation)) #TODO does not parse everything correctly?
-
+            ints = dict(re.findall(r'([a-zA-Z][_a-zA-Z0-9]+)=(-?[a-zA-Z0-9]+)', state_valuation))
+            booleans = re.findall(r'(\!?)([a-zA-Z][_a-zA-Z0-9]+)[\s\t]+', state_valuation)
+            booleans = {b[1]: False if b[0] == "!" else True for b in booleans}
             if int(ints.get("previousActionAgent", 3)) != 3:
                 continue
             if int(ints.get("clock", 0)) != 0:
@@ -132,6 +134,7 @@ class MiniGridShieldHandler(ShieldHandler):
             state = to_state(ints, booleans)
             action_dictionary[state] = get_allowed_actions_mask([choice_labeling.get_labels_of_choice(model.get_choice_index(stateID, choice[1])) for choice in choices])
 
+        toc()
         return action_dictionary