# I can not get my list through the List.filterbyboolmask 2

**URL:** <https://forum.dynamobim.com/t/i-can-not-get-my-list-through-the-list-filterbyboolmask-2/62910>\
**Category:** Revit\
**Tags:** dynamo\
**Created:** [April 15, 2021, 11:31am UTC](https://forum.dynamobim.com/t/i-can-not-get-my-list-through-the-list-filterbyboolmask-2/62910 "2021-04-15T11:31:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kamuYAGW8](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/kamuyagw8/32/115262_2.png) [@kamuYAGW8](https://forum.dynamobim.com/u/kamuYAGW8)\
**Post date:** [April 15, 2021, 11:31am UTC](https://forum.dynamobim.com/t/i-can-not-get-my-list-through-the-list-filterbyboolmask-2/62910/1 "2021-04-15T11:31:31Z")

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Hi Folks, I am trying to get a set of values through the List.filterbyBoolMask node (at the attached picture, the reed circle), when my filter finds a value of#QQC60060 (at the picture, the value with the blue line) in the same set of values. I’m only getting own value through my filter node…

Can anybody help ?

Regards,  
KAMU

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/4/7/4798e03de1e20d17c2200b5ebdfccb8ba00602c2.png)

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**Author:** ![Marcel\_Rijsmus](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/marcel_rijsmus/32/8539_2.png) [@Marcel\_Rijsmus](https://forum.dynamobim.com/u/Marcel_Rijsmus)\
**Post date:** [April 15, 2021, 12:26pm UTC](https://forum.dynamobim.com/t/i-can-not-get-my-list-through-the-list-filterbyboolmask-2/62910/2 "2021-04-15T12:26:51Z")

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There are nulls in your lists  
Replace the null in your lists like this  
The first code block is not needed and from an old version

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/c/6/c6465cbb7df291dbee279fdb86ad45dccd4c9a76.png)