# New node property and validation

**URL:** <https://discourse.nodered.org/t/new-node-property-and-validation/6673>\
**Category:** Developing Nodes\
**Created:** [10 January 2019 20:54 UTC](https://discourse.nodered.org/t/new-node-property-and-validation/6673 "2019-01-10T20:54:15Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![BartButenaers](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/bartbutenaers/32/10476_2.png) [@BartButenaers](https://discourse.nodered.org/u/BartButenaers)\
**Post date:** [10 January 2019 20:58 UTC](https://discourse.nodered.org/t/new-node-property-and-validation/6673/2 "2019-01-10T20:58:33Z")

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Hi @Onixarts,

I have described [here](https://discourse.nodered.org/t/upgrading-nodes-specifically-my-own/2641/11?u=bartbutenaers) some time ago some stuff you can do when adding new properties to existing nodes. Hopefully it can help you...

Bart

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