# LIST - find items on sublists that match

**URL:** <https://forum.dynamobim.com/t/list-find-items-on-sublists-that-match/38930>\
**Category:** Lists-Logic\
**Created:** [July 31, 2019, 7:44am UTC](https://forum.dynamobim.com/t/list-find-items-on-sublists-that-match/38930 "2019-07-31T07:44:23Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Piotrek18](https://avatars.discourse-cdn.com/v4/letter/p/7bcc69/32.png) [@Piotrek18](https://forum.dynamobim.com/u/Piotrek18)\
**Post date:** [July 31, 2019, 7:44am UTC](https://forum.dynamobim.com/t/list-find-items-on-sublists-that-match/38930/1 "2019-07-31T07:44:23Z")

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Hi All,  
I’ve got a problem with matching items on list (sublists). I want to pass through bool mask only those surfaces, that has points with specific coordinates showed on anather list.  
Anyone can help?

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/6/d/6d1db8cfcb0776e946eff70ea60ae8e71f0e0cb1.png)  
Thanks in advance  
PS

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<div class="post-metadata">

**Author:** ![Piotrek18](https://avatars.discourse-cdn.com/v4/letter/p/7bcc69/32.png) [@Piotrek18](https://forum.dynamobim.com/u/Piotrek18)\
**Post date:** [July 31, 2019, 7:45am UTC](https://forum.dynamobim.com/t/list-find-items-on-sublists-that-match/38930/2 "2019-07-31T07:45:42Z")

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better image:

 ![matching%20lists](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/5/8/580033eeaf4bcac2dbbdd55435dc1b07ed60137a.jpeg)

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<div class="post-metadata">

**Author:** ![seyedamir.hakim](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/seyedamir.hakim/32/76910_2.png) [@seyedamir.hakim](https://forum.dynamobim.com/u/seyedamir.hakim)\
**Post date:** [July 31, 2019, 7:55am UTC](https://forum.dynamobim.com/t/list-find-items-on-sublists-that-match/38930/4 "2019-07-31T07:55:15Z")

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Instead of using == and List.FilterByBoolMask nodes, try using List.IndexOf and List.GetItemAtIndex.

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<div class="post-metadata">

**Author:** ![Piotrek18](https://avatars.discourse-cdn.com/v4/letter/p/7bcc69/32.png) [@Piotrek18](https://forum.dynamobim.com/u/Piotrek18)\
**Post date:** [July 31, 2019, 2:09pm UTC](https://forum.dynamobim.com/t/list-find-items-on-sublists-that-match/38930/5 "2019-07-31T14:09:40Z")

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Got it!  
solved man, thanks!