# From Level.Name List to parameter value

**URL:** <https://forum.dynamobim.com/t/from-level-name-list-to-parameter-value/93569>\
**Category:** Revit\
**Tags:** revit, dynamo\
**Created:** [September 7, 2023, 2:55pm UTC](https://forum.dynamobim.com/t/from-level-name-list-to-parameter-value/93569 "2023-09-07T14:55:58Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![arincakkin](https://avatars.discourse-cdn.com/v4/letter/a/a6a055/32.png) [@arincakkin](https://forum.dynamobim.com/u/arincakkin)\
**Post date:** [September 7, 2023, 2:55pm UTC](https://forum.dynamobim.com/t/from-level-name-list-to-parameter-value/93569/1 "2023-09-07T14:55:58Z")

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I want to assign value to generic model with Element.SetParameterByName node. If i do it from Levels-\>Level.Name-\>Element.SetParameterByName it’s working. But i want to use levels from elements. I don’t know how to use list levels.

 ![Ekran görüntüsü 2023-09-07 174339](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/d/6/d6d4bc0b0fba853161aac7c2982cb15f7afa8303.png)

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**Author:** ![arincakkin](https://avatars.discourse-cdn.com/v4/letter/a/a6a055/32.png) [@arincakkin](https://forum.dynamobim.com/u/arincakkin)\
**Post date:** [September 7, 2023, 3:00pm UTC](https://forum.dynamobim.com/t/from-level-name-list-to-parameter-value/93569/2 "2023-09-07T15:00:58Z")

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Lacing crossproduct has work coinsidently. But i don’t know how and why. I’d be appreciated if anyone explain the difference

 ![Ekran görüntüsü 2023-09-07 175850](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/a/f/afd28735bcd9fe2fdc3d16a2a239c67eac31d109.png)

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**Author:** ![stefan.gokstorp](https://avatars.discourse-cdn.com/v4/letter/s/dec6dc/32.png) [@stefan.gokstorp](https://forum.dynamobim.com/u/stefan.gokstorp)\
**Post date:** [September 8, 2023, 10:01am UTC](https://forum.dynamobim.com/t/from-level-name-list-to-parameter-value/93569/3 "2023-09-08T10:01:31Z")

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find this picture the best explaination of lacing

 ![f04427e1f20da4f29e4d2e0afb3889feb2cbb4ed](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/d/7/d75a9050e9a76889aee2831f2e2199b9ab57b233.png)

study the values in the picture and it should be clear

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<div class="post-metadata">

**Author:** ![arincakkin](https://avatars.discourse-cdn.com/v4/letter/a/a6a055/32.png) [@arincakkin](https://forum.dynamobim.com/u/arincakkin)\
**Post date:** [September 8, 2023, 10:27am UTC](https://forum.dynamobim.com/t/from-level-name-list-to-parameter-value/93569/4 "2023-09-08T10:27:13Z")

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Thank you @stefan.gokstorp it’ looks pretty clear. im studing on it. If i stuck i’ll ask some details if it’s ok for you

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**Author:** ![stefan.gokstorp](https://avatars.discourse-cdn.com/v4/letter/s/dec6dc/32.png) [@stefan.gokstorp](https://forum.dynamobim.com/u/stefan.gokstorp)\
**Post date:** [September 8, 2023, 11:32am UTC](https://forum.dynamobim.com/t/from-level-name-list-to-parameter-value/93569/5 "2023-09-08T11:32:00Z")

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no problem