Help Creating a History Table and Form query search

Hello Everyone,

I'm very new to Access, I only started this Monday.

I have created an item weight database for several Items, I need to keep a history of changes for every item.

The approach I took was to create 2 table and add a relationship between them.
Then I made a form where you can edit each item. Now the problems Start :)

I've been trying to figure out how to set up the form so when I change values it will add the previous values to the history table, I also wanted to lock the form in a way that it would only changes the values in the main table by pressing a save changes bottom.

I attached the file I was working on in access 2010. can anyone please help me out?
I have been puling hairs with this for days.
thanks so much
Francisco

Attached Files

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History_Example.zip (83.8 KB)