Hi @awiggin does his response answer your question? Also, welcome to the ODK forums. It'd be great if you could add a profile image and post an introduction to the community forum thread: Introduce yourself here!
And thanks @Souirji_Abdelghani! Also, you can format code in your post by wrapping a part of the text in single ` or by adding a line above with ```plain and below with just the three marks and no word "plain"
So it will display like this: (count-selected(${your-variable-name} >= 2)
or
(count-selected(${your-variable-name} >= 2)
Sometimes it can make it a little easier to read.