Updating only one field

I have this problem, I have a form where I have an entity with multiple attributes and I created a drop-down button to update only one attribute out of the form before to click save in the form, to do that the drop down calls a microflow to retreive the entity from the DB and avoid commit the values in the form and only commit the change in the attribute that reprecent the drop down button, My problem is when I commit the object in my microflow the form updates to the original values errasing the changes that I had not saved in the form. How I can avoid that in the same page.
1 answers

When you retrieve the object from the database the object will be filled with the original data and when you then commit the object all the values will be stored as they were retrieved from the database.

It is not possible to only save 1 attribute specifically, you can only save an object.