I generated a drop down list (content controls) and if statements depending on drop down list one year ago.

I have a drop down list with A, B, C and D possibilities.
If I choose an "A" in a drop down list, I want that in the text later on "You choose A" is written, if I choose B in a drop down list I want "You choose B" to be written and so on.

I used this formulas:
{ IF { REF Dropdown1 } = "A" "You choose A” “" }
{ IF { REF Dropdown1 } = "B" "You choose B” “" }
{ IF { REF Dropdown1 } = "C" "You choose C” “" }

This funktion always worked until few days ago. I didn`t change anything, it is just not working. I also tried to generate new drop down list called "test" with options "A" and "B", new bookmark called "test" and wrote formula { IF { REF test \h } = "A" "You choose A” “" }. And it is not working at all. What is the problem?