They are correct. text.visible isn’t a possibility here in game lab, but there are work arounds.
I like setting my text as a variable var phrase = ""; (which sets the variable phrase to be an empty string of text.
Then, in the conditional block, you have some code that says if the counter is less than 17, phrase = “Congratulations! You won the car!”
This replaces the empty text with some real text and it shows up.
There was a thread just last week with some other options if you want to look at that.
Good luck!
Mike