Changes in List returning the same value in the shouldUpdate Selector method

[PLynx01]

I've encountered a problem with updating the UI with the changes in List. I know that the value (in my case the List) selected by the Selector must be overwritten by another value, in order to trigger a change between previous and next

So when adding items to the list, instead of this:
options.add(optionModel);

I used this:
options = [...options, optionModel];
And in that case, it works

But, when modyfing the entries from the list, like this:
options[optionIndex].frequencyPreset = preset; options = [...options];
Or removing using this:
options = options..removeAt(index);
The values from the previous and next are the same, so the Selector does not see the changes, that were made in the List
Could someone help me out with this?