# Create materials using Excel - Graph Error **URL:** \ **Category:** Revit\ **Tags:** revit, excel, dynamo\ **Created:** [October 10, 2022, 11:37am UTC](https://forum.dynamobim.com/t/create-materials-using-excel-graph-error/81914 "2022-10-10T11:37:24Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Ensilnj](https://avatars.discourse-cdn.com/v4/letter/e/43a26b/32.png) [@Ensilnj](https://forum.dynamobim.com/u/Ensilnj)\ **Post date:** [October 10, 2022, 11:37am UTC](https://forum.dynamobim.com/t/create-materials-using-excel-graph-error/81914/1 "2022-10-10T11:37:24Z")
Hi All, I am using previous forum posts to guide my graph and I am running into some problems. I want to control the Keywords & Material class using my Excel document which at the moment isn’t working using the set parameter node. I assume these need a different approach since it works for the other parameters like comment & description. Assuming I can correct this, is there a way that the duplicated materials can have a unique material asset so that when I start building the materials, I don’t have the appearances change due to being the same assets. Hope I make sense This is where I am currently at. [Excel2Materials.dyn](https://forum.dynamobim.com/uploads/short-url/yKqXKPCdtcyq7K2ITdiWRM5Trpg.dyn) (46.0 KB) ---
**Author:** ![Ensilnj](https://avatars.discourse-cdn.com/v4/letter/e/43a26b/32.png) [@Ensilnj](https://forum.dynamobim.com/u/Ensilnj)\ **Post date:** [October 10, 2022, 1:10pm UTC](https://forum.dynamobim.com/t/create-materials-using-excel-graph-error/81914/2 "2022-10-10T13:10:24Z")
Screenshot of graph if it’s easier ![Excel2Materials_2022-10-10_01-28-44](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/b/c/bc4d2666ede22b2c4f53841bb2ce442cf830fb6e.png) ---
**Author:** ![Alban\_de\_Chasteigner](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/alban_de_chasteigner/32/39650_2.png) [@Alban\_de\_Chasteigner](https://forum.dynamobim.com/u/Alban_de_Chasteigner)\ **Post date:** [October 10, 2022, 1:27pm UTC](https://forum.dynamobim.com/t/create-materials-using-excel-graph-error/81914/3 "2022-10-10T13:27:23Z")
> [@Ensilnj](#): > > can I have a unique material asset Hi, There are a lot of custom nodes for materials in the _Genius Loci_ package. (_AppearanceAsset Create, Material Set AppearanceAsset, Material Set Class_ nodes…) ---
**Author:** ![Ensilnj](https://avatars.discourse-cdn.com/v4/letter/e/43a26b/32.png) [@Ensilnj](https://forum.dynamobim.com/u/Ensilnj)\ **Post date:** [October 10, 2022, 2:17pm UTC](https://forum.dynamobim.com/t/create-materials-using-excel-graph-error/81914/4 "2022-10-10T14:17:24Z")
Hi Alban, Thank you!! One less item on the list. Material class is sorted. See updated graph with Genius Loci package. Still stuck with “Keywords” I don’t know the duplicate asset node at all…what inputs would it need to slot in the graph? ![Excel2Materialsupdate_2022-10-10_04-13-30](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/3/4/341c07bca42c34a585c991df785668862a2b1a94.png) ---
**Author:** ![Alban\_de\_Chasteigner](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/alban_de_chasteigner/32/39650_2.png) [@Alban\_de\_Chasteigner](https://forum.dynamobim.com/u/Alban_de_Chasteigner)\ **Post date:** [October 10, 2022, 3:16pm UTC](https://forum.dynamobim.com/t/create-materials-using-excel-graph-error/81914/5 "2022-10-10T15:16:33Z")
> [@Ensilnj](#): > > Still stuck with “Keywords” You can only set the keyword value of the appearance asset element or physical or thermal asset. It’s not poasible with the material keyword parameter. > **[How to access the builtin material parameter "keywords"?](https://forums.autodesk.com/t5/revit-api-forum/how-to-access-the-builtin-material-parameter-quot-keywords-quot/td-p/7805539)** > >   Programming for Revit 2017 I am trying to access the builtin material parameter "Keywords" but I cannot access it. Any ideas why?    ...