diff --git a/paramecio2/libraries/db/extrafields/imagefield.py b/paramecio2/libraries/db/extrafields/imagefield.py
index 290c3fb..4728b0f 100644
--- a/paramecio2/libraries/db/extrafields/imagefield.py
+++ b/paramecio2/libraries/db/extrafields/imagefield.py
@@ -72,44 +72,50 @@ class ImageField(CharField):
         
         #if not change
         
-        if not field_file in files_uploaded:
-            
-            if value=='':
+        if field_file in files_uploaded:
+        
+            if files_uploaded[field_file].filename=='':
                 
-                if self.model:
+                if value=='':
                     
-                    if self.model.updated:
+                    if self.model:
                         
-                        old_reset=self.model.yes_reset_conditions
-                        
-                        self.model.yes_reset_conditions=False
-                        
-                        with self.model.select([self.name]) as cur:
-                        
-                            for arr_image in cur:
-                                
-                                if arr_image[self.name]!='':
-                                    try:
-                                        os.remove(arr_image[self.name])
-                                    except:
-                                        pass
-                                
-                                #if arr_image[self.name]!=save_file and arr_image[self.name]!='':
-                                
-                                #value=arr_image[self.name]
-                        
-                        self.model.yes_reset_conditions=old_reset
-                self.txt_error='Field is empty'
-                self.error=True
-                
-                return ''
+                        if self.model.updated:
+                            
+                            old_reset=self.model.yes_reset_conditions
+                            
+                            self.model.yes_reset_conditions=False
+                            
+                            with self.model.select([self.name]) as cur:
+                            
+                                for arr_image in cur:
+                                    
+                                    if arr_image[self.name]!='':
+                                        try:
+                                            os.remove(arr_image[self.name])
+                                        except:
+                                            pass
+                                    
+                                    #if arr_image[self.name]!=save_file and arr_image[self.name]!='':
+                                    
+                                    #value=arr_image[self.name]
+                            
+                            self.model.yes_reset_conditions=old_reset
+                    self.txt_error='Field is empty'
+                    self.error=True
+                    
+                    return ''
 
-            else:
-                
-                value=os.path.basename(value)
-                
-                return self.save_folder+'/'+value
+                else:
+                    
+                    value=os.path.basename(value)
+                    
+                    return self.save_folder+'/'+value
+        else:
             
+            value=os.path.basename(value)
+                    
+            return self.save_folder+'/'+value
         
         # Load image file
         
diff --git a/paramecio2/libraries/db/extrafields/jsonfield.py b/paramecio2/libraries/db/extrafields/jsonfield.py
index e90221d..80897ff 100644
--- a/paramecio2/libraries/db/extrafields/jsonfield.py
+++ b/paramecio2/libraries/db/extrafields/jsonfield.py
@@ -72,6 +72,7 @@ class JsonValueField(PhangoField):
         super().__init__(name, required)
     
         self.error_default='Sorry, the json dict is invalid'
+        self.default_value={}
 
         #self.set_default='NOT NULL'
     
@@ -86,7 +87,7 @@ class JsonValueField(PhangoField):
         
         except json.JSONDecodeError:
                 
-            final_value={}
+            final_value='{}'
             self.error=True
             self.txt_error=self.error_default            
         
diff --git a/setup.py b/setup.py
index f6254b5..3a27664 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@ import os
 from setuptools import setup, find_packages
 
 
-if sys.version_info < (3, 6):
+if sys.version_info < (3, 8):
     raise NotImplementedError("Sorry, you need at least Python 3.6 for use paramecio2.")
 
 #import paramecio
@@ -13,7 +13,7 @@ if sys.version_info < (3, 6):
 # If you install passlib and bcrypt, the password system will use bcrypt by default, if not, will use native crypt libc 
 
 setup(name='paramecio2',
-      version='2.0.21',
+      version='2.0.22',
       description='Simple Web Framework based in flask and Mako.',
       long_description='This framework is a simple framework used for create web apps. Paramecio is modular and fast. By default have a module called admin that can be used for create admin sites',
       author='Antonio de la Rosa Caballero',