# Can't update hidden field

**URL:** <https://community.feathery.io/t/cant-update-hidden-field/375>\
**Category:** Support\
**Created:** [January 6, 2024, 6:37pm UTC](https://community.feathery.io/t/cant-update-hidden-field/375 "2024-01-06T18:37:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Tributestream](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.feathery.io/tributestream/32/224_2.png) [@Tributestream](https://community.feathery.io/u/Tributestream)\
**Post date:** [January 6, 2024, 6:37pm UTC](https://community.feathery.io/t/cant-update-hidden-field/375/1 "2024-01-06T18:37:34Z")

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As seen here, I have created a hidden field in the dashboard called custom-url.  
I get an error saying there are invalid fields with my rule.

My goal is to use the javascript logic to take in a loved\_ones\_name, manipulate the text so it looks like a slug, and then display that to the user.

My issue doesn’t lie in the function to change the text, it lies in displaying it to the user via a hidden field.

While I can define a custom text such as {{loved\_ones\_name}} and have it display what the user inputs in the appropriate form, I can’t seem to get the data to a hidden field nor display a hidden field to the user. Any assistance would be appreciated as I’ve re-read the docs multiple times and I’m not sure what I’m doing something wrong.

 ![Screenshot 2024-01-06 at 1.30.18 PM](https://canada1.discourse-cdn.com/flex030/uploads/feathery/original/1X/f535cac26a7e615fbd944ecdff691e82b15f5cc3.png)

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**Author:** ![peter](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.feathery.io/peter/32/7_2.png) [@peter](https://community.feathery.io/u/peter)\
**Post date:** [January 6, 2024, 9:25pm UTC](https://community.feathery.io/t/cant-update-hidden-field/375/2 "2024-01-06T21:25:50Z")

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cc: @andy to help out here!

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**Author:** ![andy](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.feathery.io/andy/32/126_2.png) [@andy](https://community.feathery.io/u/andy)\
**Post date:** [January 8, 2024, 4:02pm UTC](https://community.feathery.io/t/cant-update-hidden-field/375/3 "2024-01-08T16:02:13Z")

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Hey, it turns out that the problematic statement was in the condition “name\_of\_loved\_one is filled” – It was a bug on our part that we fixed just now. You may just have to reselect “is filled” to resolve it. Let us know if you have any other issues.
