# Building Pads dynamo

**URL:** <https://forum.dynamobim.com/t/building-pads-dynamo/81166>\
**Category:** Revit\
**Tags:** python\
**Created:** [September 18, 2022, 9:00pm UTC](https://forum.dynamobim.com/t/building-pads-dynamo/81166 "2022-09-18T21:00:02Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![eduardo123477](https://avatars.discourse-cdn.com/v4/letter/e/9fc29f/32.png) [@eduardo123477](https://forum.dynamobim.com/u/eduardo123477)\
**Post date:** [September 18, 2022, 9:00pm UTC](https://forum.dynamobim.com/t/building-pads-dynamo/81166/1 "2022-09-18T21:00:02Z")

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I have a problem when trying to create construction platforms with dynamo and phyton, under structural elements, could you help me to solve the error please?

 ![Sin título](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/3/9/39cc1fe271b2ccfe4ac6fb2e8403866c7215f8cd.png)

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**Author:** ![newshunhk](https://avatars.discourse-cdn.com/v4/letter/n/3bc359/32.png) [@newshunhk](https://forum.dynamobim.com/u/newshunhk)\
**Post date:** [September 19, 2022, 2:02am UTC](https://forum.dynamobim.com/t/building-pads-dynamo/81166/2 "2022-09-19T02:02:56Z")

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hello, curveloop.Append not append  
append is from python, while Append is from curveloop method

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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:** [September 19, 2022, 4:40am UTC](https://forum.dynamobim.com/t/building-pads-dynamo/81166/3 "2022-09-19T04:40:08Z")

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Also, I believe you’ll need to transform your Dynamo polycurves into Revit curves. Explode them and then use the ToRevitType() method to do so.