Issue with disabled state

Hi everyone!

I need some help. I am trying to create a memory game.

• I have a range of cards. Each card has 3 states (normal, selected and disabled) and the initial state is normal.
• When the user selects 2 cards that do not belong to the same pair, a layer make them go back to the normal state.
• When the user selects 2 cards that do belong to the same pair, a layer (should) make them change to the disabled state.

My variable and my layers show correctly, but my cards do not turn to the disabled state.

Why????

For a better understanding, I attached my file.

Thank you in advance for your kind answers.