# Custom Node Symbols Error Message

**URL:** https://forum.dynamobim.com/t/custom-node-symbols-error-message/63409
**Category:** Uncategorized
**Created:** [April 28, 2021, 5:00pm UTC](https://forum.dynamobim.com/t/custom-node-symbols-error-message/63409 "2021-04-28T17:00:55Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Joseph\_C\_Lee](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/joseph_c_lee/32/114818_2.png) [@Joseph\_C\_Lee](https://forum.dynamobim.com/u/Joseph_C_Lee)
#### Post date: [April 28, 2021, 5:00pm UTC](https://forum.dynamobim.com/t/custom-node-symbols-error-message/63409/1 "2021-04-28T17:00:55Z")

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I got a property error message of using “# % \* ? \ :” while I am creating a custom node that the name only is only using alphabet. Does anyone have idea what the problem was?

 ![2021-04-28_11-54-37](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/7/c/7c3f58ad51ae832e432f7c77c7d82a999adb23f4.jpeg)

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### Author: ![Michael\_Kirschner2](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/michael_kirschner2/32/75576_2.png) [@Michael\_Kirschner2](https://forum.dynamobim.com/u/Michael_Kirschner2)
#### Post date: [April 28, 2021, 5:27pm UTC](https://forum.dynamobim.com/t/custom-node-symbols-error-message/63409/2 "2021-04-28T17:27:32Z")

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not without seeing the name of your custom node 😉 - spaces perhaps?

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<div class="post-metadata">

### Author: ![Joseph\_C\_Lee](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/joseph_c_lee/32/114818_2.png) [@Joseph\_C\_Lee](https://forum.dynamobim.com/u/Joseph_C_Lee)
#### Post date: [April 28, 2021, 6:17pm UTC](https://forum.dynamobim.com/t/custom-node-symbols-error-message/63409/3 "2021-04-28T18:17:14Z")

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It seems like a version problem. I went back to open the same Dynamo file from Revit R19. It didn’t give me the error message from Revit R20. I agree it was probably the space. I assume R20 Dynamo doesn’t allow " " in between the names.

 ![2021-04-28_13-13-33](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/f/4/f4ca0bca22aaa4b2faca289d890387e24a1f459c.jpeg)