post-insert change to database block item not committing.

I am attempting to change a header block item to another value once a commit_form call is made.

I have created a timer that calls the commit_form, and all changes made.

I have created a post-insert, and post-update trigger to update the header block's item(database item) and set it like this.

: block.item := 'value';

I turned off all my on-error messages to make sure there wasn't a blocked error, and it told me, when I attempted to save again, 'No changes to save'(which I previously removed this message for ease of usage).

My 'detail' block's data 'does' get committed.