how to skip spinner values based on variable/button ?

2020 7 5

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I have a spinner associated to a button

I would like this button to be inactive for spinner values "during" which I pressed another button (basically if the first button is "process" and instruct the app to process the element corresponding to the spinner value, I would like to have another button, let's say "done", which will prevent me to process again the same value).

I can't figure out a way to do it because it seems that the spinner values that one can get are only the past ones not the actual ones.

so while I could compensate while increasing the values (by adding a +1 to the value to implement a condition for button inactivation)... I could not compensate when changing the sign of the spinner value change function