# Add Revision not working?

**URL:** <https://forum.dynamobim.com/t/add-revision-not-working/20523>\
**Category:** Revit\
**Tags:** archi-lab, dynamo\
**Created:** [March 28, 2018, 11:21am UTC](https://forum.dynamobim.com/t/add-revision-not-working/20523 "2018-03-28T11:21:36Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![DavidV](https://avatars.discourse-cdn.com/v4/letter/d/4af34b/32.png) [@DavidV](https://forum.dynamobim.com/u/DavidV)\
**Post date:** [March 28, 2018, 11:21am UTC](https://forum.dynamobim.com/t/add-revision-not-working/20523/1 "2018-03-28T11:21:36Z")

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Hi,

I’m working on a graph to apply revisions to my sheet. First I’ve filtered out the Sheets that contains “UM-” and “BM-” in the sheetnumber.

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/1/6/1642b5a5ec02439c05819f26d88ca6e8db4ffd09.jpg)

Somehow the add revision to sheet node doesn’t work.

Someone knows why this isn’t working?

Gr. David

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**Author:** ![Konrad\_K\_Sobon](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/konrad_k_sobon/32/8838_2.png) [@Konrad\_K\_Sobon](https://forum.dynamobim.com/u/Konrad_K_Sobon)\
**Post date:** [March 28, 2018, 12:48pm UTC](https://forum.dynamobim.com/t/add-revision-not-working/20523/2 "2018-03-28T12:48:52Z")

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It needs a Sheet not Sheet Number (string).

 ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/e/2/e2a91f71d5cd22416e2b5fa01b942610d00af612.jpg)

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<div class="post-metadata">

**Author:** ![DavidV](https://avatars.discourse-cdn.com/v4/letter/d/4af34b/32.png) [@DavidV](https://forum.dynamobim.com/u/DavidV)\
**Post date:** [March 28, 2018, 9:25pm UTC](https://forum.dynamobim.com/t/add-revision-not-working/20523/3 "2018-03-28T21:25:34Z")

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Thanks Konrad,

Somehow I keep making the same mistake with the filter.byboolean mask.