# Dynamo with revit to tag elements by number sequence

**URL:** <https://forum.dynamobim.com/t/dynamo-with-revit-to-tag-elements-by-number-sequence/13234>\
**Category:** Revit\
**Created:** [July 17, 2017, 9:32am UTC](https://forum.dynamobim.com/t/dynamo-with-revit-to-tag-elements-by-number-sequence/13234 "2017-07-17T09:32:33Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![kingofgeneration2012](https://avatars.discourse-cdn.com/v4/letter/k/ce73a5/32.png) [@kingofgeneration2012](https://forum.dynamobim.com/u/kingofgeneration2012)\
**Post date:** [July 17, 2017, 9:32am UTC](https://forum.dynamobim.com/t/dynamo-with-revit-to-tag-elements-by-number-sequence/13234/1 "2017-07-17T09:32:33Z")

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Please i need help i want dynamo script to allow me to tag lighting fixtures with sequence number i will tag them from left to right i need first light fixture to take number 1 and second one to take number 2 and so on

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**Author:** ![simoneavellini](https://avatars.discourse-cdn.com/v4/letter/s/ee7513/32.png) [@simoneavellini](https://forum.dynamobim.com/u/simoneavellini)\
**Post date:** [July 17, 2017, 12:14pm UTC](https://forum.dynamobim.com/t/dynamo-with-revit-to-tag-elements-by-number-sequence/13234/2 "2017-07-17T12:14:56Z")

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@kingofgeneration2012  
 ![](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/c/6/c6404cf8048436bf911a96f8b710b18416fe71b2.png)

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**Author:** ![kingofgeneration2012](https://avatars.discourse-cdn.com/v4/letter/k/ce73a5/32.png) [@kingofgeneration2012](https://forum.dynamobim.com/u/kingofgeneration2012)\
**Post date:** [July 17, 2017, 12:48pm UTC](https://forum.dynamobim.com/t/dynamo-with-revit-to-tag-elements-by-number-sequence/13234/3 "2017-07-17T12:48:30Z")

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simoneavellini , thank you for fast respomse and it works perfect 🙂

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<div class="post-metadata">

**Author:** ![kingofgeneration2012](https://avatars.discourse-cdn.com/v4/letter/k/ce73a5/32.png) [@kingofgeneration2012](https://forum.dynamobim.com/u/kingofgeneration2012)\
**Post date:** [July 17, 2017, 1:06pm UTC](https://forum.dynamobim.com/t/dynamo-with-revit-to-tag-elements-by-number-sequence/13234/4 "2017-07-17T13:06:43Z")

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but i have one problem : it only take one row in serial numbering i need to take all the plan lighting fixtures in serial numbering : go in first row 1,2,3,4,5,…etc and back from second row 6,7,8,9,…etc any way to do this???

 ![](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/0/d/0d5408887b560f0d4fd180ccf2017fdc86f77cbe.PNG)

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<div class="post-metadata">

**Author:** ![simoneavellini](https://avatars.discourse-cdn.com/v4/letter/s/ee7513/32.png) [@simoneavellini](https://forum.dynamobim.com/u/simoneavellini)\
**Post date:** [July 17, 2017, 1:41pm UTC](https://forum.dynamobim.com/t/dynamo-with-revit-to-tag-elements-by-number-sequence/13234/5 "2017-07-17T13:41:51Z")

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@kingofgeneration2012,  
amended quickly…quite rough 🙂

 ![](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/5/c/5cbac0f7985ceaa83f5c7bf9d3b235d9adc81626.png)

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<div class="post-metadata">

**Author:** ![kingofgeneration2012](https://avatars.discourse-cdn.com/v4/letter/k/ce73a5/32.png) [@kingofgeneration2012](https://forum.dynamobim.com/u/kingofgeneration2012)\
**Post date:** [July 17, 2017, 2:04pm UTC](https://forum.dynamobim.com/t/dynamo-with-revit-to-tag-elements-by-number-sequence/13234/6 "2017-07-17T14:04:59Z")

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You are a hero 👍 Thank you so much

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**Author:** ![GregX](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/gregx/32/56837_2.png) [@GregX](https://forum.dynamobim.com/u/GregX)\
**Post date:** [July 18, 2017, 1:44pm UTC](https://forum.dynamobim.com/t/dynamo-with-revit-to-tag-elements-by-number-sequence/13234/7 "2017-07-18T13:44:05Z")

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![](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/c/a/cad50846a090c57099b3cdb1169dcfd249e61a51.png)  
If you dont want to count the elements in the rows you can sort it this way

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<div class="post-metadata">

**Author:** ![kingofgeneration2012](https://avatars.discourse-cdn.com/v4/letter/k/ce73a5/32.png) [@kingofgeneration2012](https://forum.dynamobim.com/u/kingofgeneration2012)\
**Post date:** [July 18, 2017, 2:00pm UTC](https://forum.dynamobim.com/t/dynamo-with-revit-to-tag-elements-by-number-sequence/13234/8 "2017-07-18T14:00:52Z")

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I want to go in first row from left to right 1,2,3,4…etc and get back from end of second row from right to left 5,6,7,9,… in continous loop numbering any way to do this ?