# True/False = False

**URL:** <https://forum.dynamobim.com/t/true-false-false/90166>\
**Category:** Revit\
**Created:** [May 30, 2023, 9:12am UTC](https://forum.dynamobim.com/t/true-false-false/90166 "2023-05-30T09:12:46Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Gianni](https://avatars.discourse-cdn.com/v4/letter/g/a4c791/32.png) [@Gianni](https://forum.dynamobim.com/u/Gianni)\
**Post date:** [May 30, 2023, 9:12am UTC](https://forum.dynamobim.com/t/true-false-false/90166/1 "2023-05-30T09:12:46Z")

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Hi!

I want to combine two lists with true/false values into one. Then I want to transpose the list, and I only want a true return if both values are true. If there is a true and a false, I want a false return. Currently, when using List.Contains = True, I get a true value even if it’s true/false.

How can I fix that?

Thanks

 ![Dynamo](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/f/a/fa98fb69622f7d90eb3da08fab35dd4cb0fc1ccf.png)

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**Author:** ![Vladimir](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/vladimir/32/147600_2.png) [@Vladimir](https://forum.dynamobim.com/u/Vladimir)\
**Post date:** [May 30, 2023, 9:14am UTC](https://forum.dynamobim.com/t/true-false-false/90166/2 "2023-05-30T09:14:38Z")

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List.AllTrue @L2

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<div class="post-metadata">

**Author:** ![Gianni](https://avatars.discourse-cdn.com/v4/letter/g/a4c791/32.png) [@Gianni](https://forum.dynamobim.com/u/Gianni)\
**Post date:** [May 30, 2023, 9:18am UTC](https://forum.dynamobim.com/t/true-false-false/90166/3 "2023-05-30T09:18:56Z")

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Fast and correct! Thank you for the solution!