# FilledRegion.ByCurves deletes Filled Region

**URL:** <https://forum.dynamobim.com/t/filledregion-bycurves-deletes-filled-region/51854>\
**Category:** Revit\
**Tags:** dynamo\
**Created:** [June 14, 2020, 9:19am UTC](https://forum.dynamobim.com/t/filledregion-bycurves-deletes-filled-region/51854 "2020-06-14T09:19:46Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Alban\_de\_Chasteigner](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/alban_de_chasteigner/32/39650_2.png) [@Alban\_de\_Chasteigner](https://forum.dynamobim.com/u/Alban_de_Chasteigner)\
**Post date:** [June 14, 2020, 9:34am UTC](https://forum.dynamobim.com/t/filledregion-bycurves-deletes-filled-region/51854/2 "2020-06-14T09:34:44Z")

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Hi @bvs1982,

This is called Element Binding.  
See this topic for a detailed explanation :

[https://forum.dynamobim.com/t/element-binding-in-revit/](https://forum.dynamobim.com/t/element-binding-in-revit/)

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