# Challenge: If Expressions & Boolean Logic | raywenderlich.com

**URL:** <https://forums.kodeco.com/t/challenge-if-expressions-boolean-logic-raywenderlich-com/107718>\
**Category:** 🎓 Courses & Articles\
**Created:** [May 3, 2020, 12:52am UTC](https://forums.kodeco.com/t/challenge-if-expressions-boolean-logic-raywenderlich-com/107718 "2020-05-03T00:52:51Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![filbabic](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/filbabic/32/108144_2.png) [@filbabic](https://forums.kodeco.com/u/filbabic)\
**Post date:** [May 3, 2020, 12:52am UTC](https://forums.kodeco.com/t/challenge-if-expressions-boolean-logic-raywenderlich-com/107718/1 "2020-05-03T00:52:51Z")

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This is a companion discussion topic for the original entry at [https://www.raywenderlich.com/7910496-programming-in-kotlin-fundamentals/lessons/7](https://www.raywenderlich.com/7910496-programming-in-kotlin-fundamentals/lessons/7)

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**Author:** ![claudiom24](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/claudiom24/32/91106_2.png) [@claudiom24](https://forums.kodeco.com/u/claudiom24)\
**Post date:** [May 12, 2020, 10:41pm UTC](https://forums.kodeco.com/t/challenge-if-expressions-boolean-logic-raywenderlich-com/107718/2 "2020-05-12T22:41:27Z")

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Hi! just started this module, but intellijIDEA won’t let me “run” the code unless I “add a configuration”, so I am kind of stuck at this point. In the previous modules it asked me about the same, I just clicked next, next and it worked perfectly.

But for this one, I started a new project given that the materials file had the messages. Can I get some help with the configuration issue? thank you.

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**Author:** ![filbabic](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/filbabic/32/108144_2.png) [@filbabic](https://forums.kodeco.com/u/filbabic)\
**Post date:** [May 13, 2020, 10:13am UTC](https://forums.kodeco.com/t/challenge-if-expressions-boolean-logic-raywenderlich-com/107718/3 "2020-05-13T10:13:51Z")

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Hey @claudiom24!

Thanks for mentioning this. The build systems and the config are always prone to errors, and it’s very specific to your ecosystem.

One idea I might have is to just try and clean the project, or use the “invalidate caches/restart” option. Or even delete the .idea folder & the .iml file from the project folder, and try to re-open it.

Let me know how things go!

Thanks,  
Filip B.

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**Author:** ![claudiom24](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/claudiom24/32/91106_2.png) [@claudiom24](https://forums.kodeco.com/u/claudiom24)\
**Post date:** [May 13, 2020, 10:58pm UTC](https://forums.kodeco.com/t/challenge-if-expressions-boolean-logic-raywenderlich-com/107718/4 "2020-05-13T22:58:48Z")

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hello! i restarted the project from the beggining and then i had no issue with the “run/debug configuration” since it autofilled with “main.kt”. Thank you very much, Filip!

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**Author:** ![filbabic](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/filbabic/32/108144_2.png) [@filbabic](https://forums.kodeco.com/u/filbabic)\
**Post date:** [May 14, 2020, 7:07am UTC](https://forums.kodeco.com/t/challenge-if-expressions-boolean-logic-raywenderlich-com/107718/5 "2020-05-14T07:07:44Z")

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Hey @claudiom24

Awesome, glad I could help!