diff --git a/api_example/app/__init__.py b/api_example/app/__init__.py
new file mode 100644
index 0000000..8b6c9f0
--- /dev/null
+++ b/api_example/app/__init__.py
@@ -0,0 +1,11 @@
+try:
+    from flask import Flask
+    import flask_authgen_jwt
+except ImportError as eImp:
+    print(f"The following import ERROR occurred in {__file__}: {eImp}")
+
+app = Flask(__name__)
+gen_auth = flask_authgen_jwt.GenJwt()
+auth = flask_authgen_jwt.DecJwt()
+
+from app import routes
\ No newline at end of file
diff --git a/api_example/app/routes.py b/api_example/app/routes.py
new file mode 100644
index 0000000..4134bff
--- /dev/null
+++ b/api_example/app/routes.py
@@ -0,0 +1,82 @@
+try:
+    import datetime as dt
+    from app import app, auth, gen_auth
+    from flask import Response, make_response, jsonify
+except ImportError as eImp:
+    print(f"The following import ERROR occurred in {__file__}: {eImp}")
+
+@gen_auth.enc_dec_jwt_config
+@auth.enc_dec_jwt_config
+def test_creds() -> dict:
+    decode_attributes = {
+        "key": "secret",
+        "algorithm": "HS256",
+    }
+    return decode_attributes
+
+@gen_auth.personal_credentials_field
+@auth.personal_credentials_field
+def personal_credentials_field() -> tuple[str, str]:
+    return "per_username", "per_password"
+
+@gen_auth.verify_bauth_credentials
+def get_basic_auth_credentials2(username: str, password: str) -> dict:
+    # Use the username and password to authenticate the user in the way you want-
+    # and return true if the user is authenticated
+    if username == "admin2" and password == "passwd2":
+        return True
+    else:
+        return False
+
+@auth.get_user_roles
+@gen_auth.get_user_roles
+def my_roles(username: str) -> list[str]:
+    # Use username to get roles from database
+    print(f"username in roles: {username}")
+    return ["admin", "user"]
+
+@auth.get_jwt_claims_to_verify
+def get_jwt_claims_to_verify() -> list[str]:
+    # return ["exp", "iat", "nbf"]
+    return ["exp", "iat"]
+
+@gen_auth.jwt_claims
+def jwt_claims() -> dict:
+    claims = {
+        "exp": dt.datetime.now(tz=dt.timezone.utc) + dt.timedelta(seconds=30),
+        "iat": dt.datetime.now(tz=dt.timezone.utc)
+    }
+    return claims
+
+@auth.verify_jwt_credentials#TODO: Checar si debe cambiar o no
+def creds(username_jwt: str, password_jwt: str) -> bool:
+    my_dict = {
+        "username_jwt": username_jwt,
+        "password_jwt": password_jwt
+    }
+    return True
+    # return False
+
+# -------------Endpoints-------------
+@app.route("/")
+@auth.login_required(roles=["admin", "eder"])
+def index():
+    return Response("Todo bien"), 200
+
+@app.route("/generate_token", methods=["POST"])
+@gen_auth.generate_jwt(roles=["eder", "user"])
+def gen_token(token):
+    response = {
+        "status": "success",
+        "token": token
+    }
+    return make_response(jsonify(response)), 200
+
+@app.route("/temp")
+def temp():
+    test = (("val1", "hola"), ("val2", "prueba2"))
+    response = {
+        "message": "solo prueba",
+        "test_data": test
+    }
+    return make_response(jsonify(response))
\ No newline at end of file
diff --git a/api_example/run_app.py b/api_example/run_app.py
new file mode 100644
index 0000000..f912a0c
--- /dev/null
+++ b/api_example/run_app.py
@@ -0,0 +1,19 @@
+try:
+    from app import app
+    from gevent.pywsgi import WSGIServer
+except ImportError as eImp:
+    print(f"The following import ERROR occurred in {__file__}: {eImp}")
+
+if __name__== "__main__":
+    try:
+        # -----------------Dev mode-----------------
+        app.run(host= "127.0.0.1", port= 5000, debug= True)
+        # debug= True for apply changes made into the files without restarting the flask server
+
+        # -----------------Prod mode----------------
+        #appServer= WSGIServer(("127.0.0.1", 5000), app)
+        #appServer.serve_forever()
+    except Exception as eImp:
+        print(f"The following import ERROR occurred in {__file__}: {eImp}")
+    finally:
+        print("Finishing program")
\ No newline at end of file
diff --git a/setup.cfg b/setup.cfg
index a3b9122..c0a326a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = Flask-authgen-jwt
-version = 1.2.4
+version = 2.0.0
 author = Diego Martinez and Guillermo Ortega
 author_email = gd-code@outlook.com
 description = JWT authentication and generator for Flask routes
diff --git a/src/flask_authgen_jwt.py b/src/flask_authgen_jwt.py
index 834dac8..dddf91b 100644
--- a/src/flask_authgen_jwt.py
+++ b/src/flask_authgen_jwt.py
@@ -19,6 +19,7 @@ class Core():
     basic_auth_callback: Callable[[str, str], bool] = None
     enc_dec_jwt_callback: dict = None
     get_user_roles_callback: list = None
+    personal_credentials: tuple[str, str] = None
 
     def enc_dec_jwt_config(self, func: Callable[[None], dict]) -> Callable[[None], dict]:
         """Decorator to verify the JWT token
@@ -29,6 +30,23 @@ def enc_dec_jwt_config(self, func: Callable[[None], dict]) -> Callable[[None], d
         self.enc_dec_jwt_callback = func()
         return func
 
+    def personal_credentials_field(self, func: Callable[[None], tuple[str, str]]) -> Callable[[None], tuple[str, str]]:
+        """
+        Decorator to set the personal credentials, if youu dont want to use username and password inside the token
+        then with this you can return a tuple in which the first element is the username and the second is the password
+        but as you want to name that respective fields so the library will validate using the fields you set
+        :param func: function to be decorated
+        :return: the tuple with the username and password with personal names
+
+        :Example:
+        @dec_jwt.personal_credentials_field
+        
+        def get_personal_credentials():
+            return "my_username_personal_name_field", "my_password_personal_name_field"
+        """
+        self.personal_credentials = func()
+        return func
+
     def verify_dict_config(self, config: str) -> None:
         """Method that veryfies the JWT configuration generator and for basic auth
         :param config: str to identify which configuration to verify"""
@@ -89,6 +107,11 @@ def __create_jwt_payload(self, bauth_credentials: dict) -> dict:
         """
         if not self.jwt_fields_attr:
             self.gen_abort_error("jwt_claims decorator and function is not defined", 500)
+        if self.personal_credentials is not None:
+            bauth_credentials[self.personal_credentials[0]] = bauth_credentials["username"]
+            bauth_credentials[self.personal_credentials[1]] = bauth_credentials["password"]
+            del bauth_credentials["username"]
+            del bauth_credentials["password"]
         payload = bauth_credentials
         payload.update(self.jwt_fields_attr)
             
@@ -226,8 +249,14 @@ def __verify_token(self, token: dict) -> None:
                         self.gen_abort_error(f"The claim {claim} is not in the token", 400)
             if len(token) < 1:
                 self.gen_abort_error("Invalid token", 401)
-            if ("username" not in token) or ("password" not in token):
-                self.gen_abort_error("Invalid token", 401)
+            if self.personal_credentials is not None:
+                per_username = self.personal_credentials[0]
+                per_password = self.personal_credentials[1]
+                if (per_username not in token) or (per_password not in token):
+                    self.gen_abort_error("Invalid token", 401)
+            else:
+                if ("username" not in token) or ("password" not in token):
+                    self.gen_abort_error("Invalid token", 401)
             keys_to_validate = self.get_jwt_claims_to_verify_callback
             for key in keys_to_validate:
                 if key not in token:
@@ -240,8 +269,12 @@ def __authenticate_credentials(self, token: dict) -> bool:
         """
         if self.credentials_success_callback is None:
             self.gen_abort_error("get_credentials_success decorator is not set", 500)
-        username_jwt = token["username"]
-        password_jwt = token["password"]
+        if self.personal_credentials is None:
+            username_jwt = token["username"]
+            password_jwt = token["password"]
+        else:
+            username_jwt = token[self.personal_credentials[0]]
+            password_jwt = token[self.personal_credentials[1]]
         return self.ensure_sync(self.credentials_success_callback)(username_jwt, password_jwt)
 
     def __set_token_as_attr(self, token: dict) -> None:
@@ -282,11 +315,14 @@ def wrapper(*args, **kwargs):
                 else:
                     token = self.__decode_jwt()
                     self.__verify_token(token)
-                    self.verify_user_roles(roles, token["username"])
 
                     grant_access = self.__authenticate_credentials(token)
                     if not grant_access:
                         self.gen_abort_error("The credentials are not correct", 401)
+                    if self.personal_credentials is not None:
+                        self.verify_user_roles(roles, token[self.personal_credentials[0]])
+                    else:
+                        self.verify_user_roles(roles, token["username"])
                     self.__set_token_as_attr(token)
 
                 return self.ensure_sync(func)(*args, **kwargs)