Project Task manually added fields not store data

Hi There,

I need to add two field with the type of Time in the Project Tasks sub table.
I have added the two field with the Form Costumization module.
I have migrated with bench but still doesn’t save the time in this 2 fileld.
The system is in developer mode = 1

There is an image where the 2 field is shown.
Please let me know how to Save the time data.

I think I need to add this fields to the tasks too?

question is duplicated, original post is this Customize Form field doesn't save data - #5 by garybsimon