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![Jacques Andre](https://uploads.teamtreehouse.com/production/profile-photos/10450742/micro_tumblr_ojzzdv21zS1vo5elao1_500.jpg)
Jacques Andre
2,780 PointsWhy do we have to repeat the questionsLeft? How does JS not know that it has been updated
How does JS not know that the questions has been decreased and use that value for the questionsLeft variable?
2 Answers
![Jacques Butcher](https://secure.gravatar.com/avatar/7a7e661334fef1cca48204ac9a739687?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Jacques Butcher
Courses Plus Student 4,102 PointsOnce you assigned the value of questions (3 the first time) to questionstLeft it won't update itself within questionsLeft automatically even if you update the value for questions. You have to therefore create the questionsLeft string again (destroying the previous one) with the new value for questions after you subtracted one from it.
![KRIS NIKOLAISEN](https://secure.gravatar.com/avatar/65d74a723997b41a80d2d909c6e06960?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
KRIS NIKOLAISEN
54,971 Pointsquestions and questionsLeft are independent variables. Their values will only change with the assignment operator.