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original_url: "https://jace.pro/blog/lookup-select-attributes/"
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Lookup Select Attributes# Lookup Select Attributes

October 29, 2017 [servicenow](/tags/servicenow/)

  Enable AI AnimationA former colleague asked me, “Hey, do you remember how to make variables dependent on each other?” It might have been her asking me. In any case, I was looking for a way to do this that wasn’t a client script which would build these dependencies.

I found it. For lookup select boxes and lookup multiple choices there is an attribute available called `ref_qual_elements` that you can set with a comma-separated list of other variables. What happens when you change the value of one of the listed variables is a server call is made and the options are re-evaluated and unset.

This is great if those options are pretty static. If you let users disable options, items that use these variables that are in progress won’t display these option.

Here’s the [official documentation about this variable attribute](https://docs.servicenow.com/bundle/istanbul-it-service-management/page/product/service-catalog-management/reference/variable-attributes.html). It doesn’t describe it as a way to save time, it will have to do.

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[View this page on GitHub](https://github.com/jacebenson/jace.pro/tree/main/./src/posts/2017/2017-10-28-lookup-select-attributes.md).

[Lookup Select Attributes](https://jace.pro/blog/lookup-select-attributes/) [Jace Benson](https://jace.pro) ![Jace Benson](https://jace.pro/icon-512x512.png)

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*This content is from Jace Benson's ServiceNow and tech blog at jace.pro*
*Original post: https://jace.pro/blog/lookup-select-attributes/*