# Built in parameters

**URL:** <https://forum.dynamobim.com/t/built-in-parameters/9046>\
**Category:** Revit\
**Tags:** revit\
**Created:** [January 22, 2017, 4:31pm UTC](https://forum.dynamobim.com/t/built-in-parameters/9046 "2017-01-22T16:31:01Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![i.tzivanidis](https://avatars.discourse-cdn.com/v4/letter/i/dec6dc/32.png) [@i.tzivanidis](https://forum.dynamobim.com/u/i.tzivanidis)\
**Post date:** [January 22, 2017, 4:31pm UTC](https://forum.dynamobim.com/t/built-in-parameters/9046/1 "2017-01-22T16:31:01Z")

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Hello guys!

Does anyone know the internal name for “Unbounded Height” built in parameter in Revit???

I am trying to change that with a python script but doesnt work.

Thanks,

John

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**Author:** ![Yna\_Db](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/yna_db/32/30641_2.png) [@Yna\_Db](https://forum.dynamobim.com/u/Yna_Db)\
**Post date:** [January 22, 2017, 4:39pm UTC](https://forum.dynamobim.com/t/built-in-parameters/9046/2 "2017-01-22T16:39:49Z")

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Please see here:  
[http://www.revitapidocs.com/2017/fb011c91-be7e-f737-28c7-3f1e1917a0e0.htm](http://www.revitapidocs.com/2017/fb011c91-be7e-f737-28c7-3f1e1917a0e0.htm)

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**Author:** ![i.tzivanidis](https://avatars.discourse-cdn.com/v4/letter/i/dec6dc/32.png) [@i.tzivanidis](https://forum.dynamobim.com/u/i.tzivanidis)\
**Post date:** [January 22, 2017, 4:41pm UTC](https://forum.dynamobim.com/t/built-in-parameters/9046/3 "2017-01-22T16:41:16Z")

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Spot on thanks!!!

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**Author:** ![Yna\_Db](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/yna_db/32/30641_2.png) [@Yna\_Db](https://forum.dynamobim.com/u/Yna_Db)\
**Post date:** [January 22, 2017, 5:03pm UTC](https://forum.dynamobim.com/t/built-in-parameters/9046/4 "2017-01-22T17:03:29Z")

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I just add a link to this thread for anyone looking for further information on the topic:

> [@"Set BuiltIn Parameter" error at line 65](https://forum.dynamobim.com/t/set-builtin-parameter-error-at-line-65/7861?source_topic_id=8811):
>
> Hello, I am trying to use the “Set BuiltIn Parameter” node from “Archi-lab\_Grimshaw” package to change the curtain wall parameters like Horizontal division and Vertical Division. I came across this [post](https://forum.dynamobim.com/t/curtain-wall-built-in-parameter-spacing/2141) similar to my question but none of those steps was helpful for me. So i have some questions regarding this: What kind of node should I input in the “ParameterName” ? I tried using “Get BuiltInParameter Name” from ArchiLab and also “BuiltInParameter.ByName” from Clockwork. Should the “E…

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**Author:** ![i.tzivanidis](https://avatars.discourse-cdn.com/v4/letter/i/dec6dc/32.png) [@i.tzivanidis](https://forum.dynamobim.com/u/i.tzivanidis)\
**Post date:** [January 22, 2017, 5:09pm UTC](https://forum.dynamobim.com/t/built-in-parameters/9046/5 "2017-01-22T17:09:13Z")

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Very welcomed