diff --git a/booleans/swap_solver.py b/booleans/swap_solver.py
index 47b1a34..db34d96 100644
--- a/booleans/swap_solver.py
+++ b/booleans/swap_solver.py
@@ -80,28 +80,28 @@ def invoke(self, context, event):
         self.dirty = False
 
         self.solve_mode = None
-
-        self.all_objects = [obj for obj in bpy.data.objects if obj.type == 'MESH']
-        self.reference_object_names = [obj.name for obj in context.selected_objects]
         self.boolean_mods = []
-        self.fast_solver_count = 0
-        self.exact_solver_count = 0
 
-        for obj in self.all_objects:
+        all_scene_objects = [obj for obj in bpy.data.objects if obj.type == 'MESH']
+        selected_object_names = [obj.name for obj in context.selected_objects]
+        fast_solver_count = 0
+        exact_solver_count = 0
+
+        for obj in all_scene_objects:
             mods = [mod for mod in obj.modifiers if mod.type == 'BOOLEAN']
             for mod in mods:
-                if mod.object.name in self.reference_object_names:
+                if mod.object.name in selected_object_names:
                     self.boolean_mods.append(mod)
             
         for mod in self.boolean_mods:
             if mod.solver == 'FAST':
-                self.fast_solver_count += 1
+                fast_solver_count += 1
             elif mod.solver == 'EXACT':
-                self.exact_solver_count += 1
+                exact_solver_count += 1
         
-        if self.fast_solver_count == len(self.boolean_mods):
+        if fast_solver_count == len(self.boolean_mods):
             self.solve_mode = 'FAST'
-        elif self.exact_solver_count == len(self.boolean_mods):
+        elif exact_solver_count == len(self.boolean_mods):
             self.solve_mode = 'EXACT'
             
         capture_modifier_keys(self)