# Filter category selection by omniclass value + Family Name **URL:** \ **Category:** Revit\ **Tags:** dynamo\ **Created:** [June 13, 2022, 6:33am UTC](https://forum.dynamobim.com/t/filter-category-selection-by-omniclass-value-family-name/77572 "2022-06-13T06:33:13Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Ensilnj](https://avatars.discourse-cdn.com/v4/letter/e/43a26b/32.png) [@Ensilnj](https://forum.dynamobim.com/u/Ensilnj)\ **Post date:** [June 13, 2022, 6:33am UTC](https://forum.dynamobim.com/t/filter-category-selection-by-omniclass-value-family-name/77572/1 "2022-06-13T06:33:13Z")
Hi All, Please can you assist with the following filtering options. 1)When looking at the furniture category for example, I would like to filter furniture families belonging to a certain omniclass. In this example, lets say if want to filter from all furniture to only indicate beds using omniclass. What Dynamo node should I use to pick up and filter by family omniclass? ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/b/0/b03b975e24dccec05fbb2634b5236774412eb7d2.png) 1. When looking at the furniture category for example, I would like to filter furniture families with a certain series number as part of the family name. eg. Fur\_100\_TableA.rfa, Fur\_100\_TableB.rfa Fur\_200\_ChairA.rfa, Fur\_200\_ChairB.rfa How would I filter all “100” furniture families for example? Regards Enslin ---
**Author:** ![\_Vijay](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/_vijay/32/91307_2.png) [@\_Vijay](https://forum.dynamobim.com/u/_Vijay)\ **Post date:** [June 13, 2022, 6:49am UTC](https://forum.dynamobim.com/t/filter-category-selection-by-omniclass-value-family-name/77572/2 "2022-06-13T06:49:27Z")
See if that helps ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/e/0/e0b2b93491563c14017105ca67bcc146a6d1b339.png) ---
**Author:** ![byousif](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/byousif/32/18584_2.png) [@byousif](https://forum.dynamobim.com/u/byousif)\ **Post date:** [January 27, 2023, 9:37am UTC](https://forum.dynamobim.com/t/filter-category-selection-by-omniclass-value-family-name/77572/3 "2023-01-27T09:37:17Z")
I can’t get “OmniClass” or “OmniClass Number” to work. It looks like it’s a special type of family parameter, and the above graph does not work with, because I tried it. ---
**Author:** ![\_Vijay](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/_vijay/32/91307_2.png) [@\_Vijay](https://forum.dynamobim.com/u/_Vijay)\ **Post date:** [January 27, 2023, 10:04am UTC](https://forum.dynamobim.com/t/filter-category-selection-by-omniclass-value-family-name/77572/4 "2023-01-27T10:04:54Z")
what is your Revit version @byousif ? ---
**Author:** ![byousif](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/byousif/32/18584_2.png) [@byousif](https://forum.dynamobim.com/u/byousif)\ **Post date:** [January 27, 2023, 10:12am UTC](https://forum.dynamobim.com/t/filter-category-selection-by-omniclass-value-family-name/77572/5 "2023-01-27T10:12:57Z")
2020 ---
**Author:** ![\_Vijay](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/_vijay/32/91307_2.png) [@\_Vijay](https://forum.dynamobim.com/u/_Vijay)\ **Post date:** [January 27, 2023, 1:30pm UTC](https://forum.dynamobim.com/t/filter-category-selection-by-omniclass-value-family-name/77572/6 "2023-01-27T13:30:16Z")
@byousif Are trying to access this parameter? ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/c/6/c614c43d8c831ca5df61ccdb2d60d53944d596ba.png) ---
**Author:** ![\_Vijay](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/_vijay/32/91307_2.png) [@\_Vijay](https://forum.dynamobim.com/u/_Vijay)\ **Post date:** [January 27, 2023, 1:35pm UTC](https://forum.dynamobim.com/t/filter-category-selection-by-omniclass-value-family-name/77572/7 "2023-01-27T13:35:22Z")
Please use this images as reference ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/0/4/04fdc627647fee58132eac752fe81766248b03cb.png) ---
**Author:** ![byousif](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/byousif/32/18584_2.png) [@byousif](https://forum.dynamobim.com/u/byousif)\ **Post date:** [January 27, 2023, 4:54pm UTC](https://forum.dynamobim.com/t/filter-category-selection-by-omniclass-value-family-name/77572/8 "2023-01-27T16:54:08Z")
Yes. I have about 200 RFAs that need this value changed often. I thought this was an easy script to make but it is not working! ---
**Author:** ![byousif](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/byousif/32/18584_2.png) [@byousif](https://forum.dynamobim.com/u/byousif)\ **Post date:** [January 27, 2023, 4:59pm UTC](https://forum.dynamobim.com/t/filter-category-selection-by-omniclass-value-family-name/77572/9 "2023-01-27T16:59:18Z")
The “OmniClass Number” parameter is read-only in the model environment and can only be edited in the family editor. It has to be selected from a list in a file - maybe this is why it can’t be read or edited like other parameters?