Text entry dropdown question

Hi,

I'd like to have a text entry ("Other") for a dropdown question.
It looks like it doesn't support dropdown type of questions.

Does someone has an Idea of how to solve it?
I prefer not to add another question, so when a user clicks other it moves him to a different question where he can type the text. The user should be able to type the text when clicking "Other", exactly like text entry works for other question types.

Thank you!