# Automatic Number Parameters In Sequence

**URL:** <https://forum.dynamobim.com/t/automatic-number-parameters-in-sequence/44817>\
**Category:** Revit\
**Created:** [December 24, 2019, 3:27am UTC](https://forum.dynamobim.com/t/automatic-number-parameters-in-sequence/44817 "2019-12-24T03:27:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![renejr75](https://avatars.discourse-cdn.com/v4/letter/r/8797f3/32.png) [@renejr75](https://forum.dynamobim.com/u/renejr75)\
**Post date:** [December 24, 2019, 3:27am UTC](https://forum.dynamobim.com/t/automatic-number-parameters-in-sequence/44817/1 "2019-12-24T03:27:38Z")

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Hi…I’m looking for a script to automatically number parameters of a family of devices. The 1st character would be the level reference and the next 3 would be a sequence. Any help would be great.  
Thanks

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<div class="post-metadata">

**Author:** ![Nick\_Boyts](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/nick_boyts/32/76313_2.png) [@Nick\_Boyts](https://forum.dynamobim.com/u/Nick_Boyts)\
**Post date:** [December 24, 2019, 1:37pm UTC](https://forum.dynamobim.com/t/automatic-number-parameters-in-sequence/44817/2 "2019-12-24T13:37:53Z")

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1. Get appropriate elements.
2. Get associated level and group by key.
3. Create sequence from number of elements in each sublist (level).
4. Combine level and sequence values.