Adding a new python file in the backend/ sever file also add column in database (there was no error in the python file). After restart the services, updates module, the file still not executed. Example, I created a new fields, when I active developer mode, go to technical > db structure > fields, I cannot find the field. Modification of coding on the backend can save on notepad and no error or bugs, but cannot execute in the frontend. Any solutions and suggestions provided was appreciated. Thanks in advanced.