diff --git a/examples/pool_map.py b/examples/pool_map.py
index 8be0597..257373e 100644
--- a/examples/pool_map.py
+++ b/examples/pool_map.py
@@ -14,23 +14,26 @@ sys.path.insert(0, dirname(dirname(abspath(__file__))))
 
 import jobmanager
 
-def func(x):
+def func(x, y, z):
     """Example function with only one argument"""
-    time.sleep(x[0]/10)
-    return np.sum(x)
+    time.sleep(x/10)
+    return np.sum([x, y, z])
+
+def wrapper(data):
+    return func(*data)
 
 # Create list of parameters
 a = list()
 for i in range(10):
-    a.append([i,2.34])
+    a.append([i, 2.34, 9])
 
 # mp.Pool example:
 p_mp = mp.Pool()
-res_mp = p_mp.map(func, a)
+res_mp = p_mp.map(wrapper, a)
 
 # equivalent to mp.Pool() but with progress bar:
 p_jm = jobmanager.decorators.Pool()
-res_jm = p_jm.map(func, a)
+res_jm = p_jm.map(wrapper, a)
 
 assert res_mp == res_jm
 print("result: ", res_jm)
diff --git a/jobmanager/decorators.py b/jobmanager/decorators.py
index 075f43b..b24bcaa 100644
--- a/jobmanager/decorators.py
+++ b/jobmanager/decorators.py
@@ -436,6 +436,7 @@ def decorate_module_ProgressBar(module, decorator=ProgressBar, **kwargs):
             decorator = ProgressBar
         kwargs.pop("override_count")
     
+  
     vdict = module.__dict__
     for key in list(vdict.keys()):
         if hasattr(vdict[key], "__call__"):
@@ -456,13 +457,13 @@ def decorate_module_ProgressBar(module, decorator=ProgressBar, **kwargs):
                         print("Jobmanager wrapped {}.{}".format(
                                                   module.__name__, key))
 
-        elif vdict[key] == mp.Pool:
+        # Decorate Pool
+        if vdict[key] == mp.Pool:
             # replace mp.Pool
-            setattr(module, vdict[key], Pool)
+            setattr(module, key, Pool)
         elif isinstance(vdict[key], ModuleType):
             # replace mp.Pool in submodules
             subdict = vdict[key].__dict__
             for skey in list(subdict.keys()):
-                if subdict[skey] == mp.pool.Pool:
-                    setattr(vdict[key], subdict[skey], Pool)
-                
\ No newline at end of file
+                if subdict[skey] == mp.Pool:
+                    setattr(vdict[key], skey, Pool)