# List.Filter by entire list

**URL:** <https://forum.dynamobim.com/t/list-filter-by-entire-list/70099>\
**Category:** Lists-Logic\
**Tags:** revit, dynamo\
**Created:** [November 7, 2021, 2:26pm UTC](https://forum.dynamobim.com/t/list-filter-by-entire-list/70099 "2021-11-07T14:26:23Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![frenga](https://avatars.discourse-cdn.com/v4/letter/f/48db29/32.png) [@frenga](https://forum.dynamobim.com/u/frenga)\
**Post date:** [November 7, 2021, 2:26pm UTC](https://forum.dynamobim.com/t/list-filter-by-entire-list/70099/1 "2021-11-07T14:26:23Z")

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I’m trying to use filter by bool mask per the snipit below and have been spinning my wheels for way too long. I’ve tried list levels and lacing settings but am not sure if I’m just not getting the right combination of the two?? Thanks in advance for your assistance.

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/6/1/61e5feccccda4a34314080c623ce7900d145eee6.png)

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**Author:** ![\_Vijay](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/_vijay/32/91307_2.png) [@\_Vijay](https://forum.dynamobim.com/u/_Vijay)\
**Post date:** [November 7, 2021, 3:54pm UTC](https://forum.dynamobim.com/t/list-filter-by-entire-list/70099/2 "2021-11-07T15:54:52Z")

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Hi @frenga ,

if you share a dummy sample file… you may get the exact answer here.

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**Author:** ![frenga](https://avatars.discourse-cdn.com/v4/letter/f/48db29/32.png) [@frenga](https://forum.dynamobim.com/u/frenga)\
**Post date:** [November 7, 2021, 9:33pm UTC](https://forum.dynamobim.com/t/list-filter-by-entire-list/70099/3 "2021-11-07T21:33:42Z")

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I got this issue figured out by simplifying the entire process. Sometimes taking a break is more valuable than one would think!