# Geometry.intersect with paired items in 2 lists

**URL:** <https://forum.dynamobim.com/t/geometry-intersect-with-paired-items-in-2-lists/17169>\
**Category:** Lists-Logic\
**Tags:** revit, dynamo\
**Created:** [December 7, 2017, 5:03am UTC](https://forum.dynamobim.com/t/geometry-intersect-with-paired-items-in-2-lists/17169 "2017-12-07T05:03:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Lam\_Hung](https://avatars.discourse-cdn.com/v4/letter/l/6f9a4e/32.png) [@Lam\_Hung](https://forum.dynamobim.com/u/Lam_Hung)\
**Post date:** [December 7, 2017, 5:03am UTC](https://forum.dynamobim.com/t/geometry-intersect-with-paired-items-in-2-lists/17169/1 "2017-12-07T05:03:58Z")

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Hi guys,

I am looking for any solution for this intersection geometry check with paired items in 2 list. Please see attached image and you could understand my matter.

 ![Intersection](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/8/8/88f03f8da4029c969a26071a7dc378455838364b.jpg)

Thank you very much for your help !

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**Author:** ![jacob.small](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/jacob.small/32/161030_2.png) [@jacob.small](https://forum.dynamobim.com/u/jacob.small)\
**Post date:** [December 7, 2017, 8:35am UTC](https://forum.dynamobim.com/t/geometry-intersect-with-paired-items-in-2-lists/17169/2 "2017-12-07T08:35:39Z")

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If you upgrade your dynamo version to 1.2 you’ll be able to enable the list at level feature1, which in turn allows you to set the geometry input to be @ level 2, and leave the lacing set to cross product. That should get the desired results.  
Otherwise you’ll need to turn to a list map node, which is a good bit more difficult than the list at level feature.