Set text column boolean of the Matrix.

I have a field in the Matrix that provides a record of the bank with Boolean. Ex: The field is 0 - No, 1 - Yes, that is, 0 and 1. Except that in my column it shows the number and only shows the name of "yes or no" when I select the it_COMBO_BOX. How do I to be displayed the name and not the number?