diff --git a/paramecio/cromosoma/databases/sqlalchemy.py b/paramecio/cromosoma/databases/sqlalchemy.py
index f77f730..6eebc6d 100644
--- a/paramecio/cromosoma/databases/sqlalchemy.py
+++ b/paramecio/cromosoma/databases/sqlalchemy.py
@@ -168,7 +168,7 @@ class SqlClass:
         if self.conn:
         
             self.conn.close()
-            self.conn=None
+            #self.conn=None
         
         pass
     
diff --git a/paramecio/cromosoma/webmodel.py b/paramecio/cromosoma/webmodel.py
index 93a9f9b..5c703ce 100644
--- a/paramecio/cromosoma/webmodel.py
+++ b/paramecio/cromosoma/webmodel.py
@@ -677,9 +677,9 @@ class WebModel:
         
         cursor=self.query(sql, conditions[1], self.connection_id)
         
-        if cursor==False:
+        if not cursor:
             self.query_error=self.sqlclass.error_connection
-            cursor.close()
+
             return False
         else:
             return cursor