# Pega Constellation 24.1.1: Populating values inside a pop up in a View using API **URL:** \ **Category:** User Experience\ **Created:** [June 23, 2026, 6:13pm UTC](https://forums.pega.com/t/pega-constellation-24-1-1-populating-values-inside-a-pop-up-in-a-view-using-api/12480 "2026-06-23T18:13:07Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![KarthikM16795015](https://avatars.discourse-cdn.com/v4/letter/k/a87d85/32.png) [@KarthikM16795015](https://forums.pega.com/u/KarthikM16795015)\ **Post date:** [June 23, 2026, 6:13pm UTC](https://forums.pega.com/t/pega-constellation-24-1-1-populating-values-inside-a-pop-up-in-a-view-using-api/12480/1 "2026-06-23T18:13:07Z")
Hi, I’m working on a requirement in Pega Constellation 24.1.1 and need guidance on the recommended implementation approach. **Context and Requirement** I have a field which I made it as a actionable button that acts as a pop up button and upon clicking it shows a pop up. I have added fields inside the pop up and need to populate the values inside using API and I have tried to do it the usual way using the DT but it is not getting populated for some reason. I checked the tracer and the API values are getting stored in the property but not displaying. Kindly help me with this issue and provide me valuable knowledge on how to proceed on this requirement. Thanks in advance. ---
**Author:** ![RameshSangili](https://yyz2.discourse-cdn.com/pega/user_avatar/forums.pega.com/rameshsangili/32/22508_2.png) [@RameshSangili](https://forums.pega.com/u/RameshSangili)\ **Post date:** [June 23, 2026, 6:36pm UTC](https://forums.pega.com/t/pega-constellation-24-1-1-populating-values-inside-a-pop-up-in-a-view-using-api/12480/2 "2026-06-23T18:36:10Z")
The Popup/Modal information is displayed from a Flow action since you mentioned actionable button (DX component I believe so). I hope you can configure the Pre Data transform on the Flow action rule to configure the required properties to display on the UI ---
**Author:** ![AntonG12](https://avatars.discourse-cdn.com/v4/letter/a/3e96dc/32.png) [@AntonG12](https://forums.pega.com/u/AntonG12)\ **Post date:** [June 23, 2026, 6:36pm UTC](https://forums.pega.com/t/pega-constellation-24-1-1-populating-values-inside-a-pop-up-in-a-view-using-api/12480/3 "2026-06-23T18:36:55Z")
Hello, before going with customizations I would like to suggest you to review the following articles that explain different type of data visualizzation in Constellation: [Patterns in Constellation](https://forums.pega.com/t/patterns-in-constellation/7031), [Constellation Cheat Sheet](https://forums.pega.com/t/constellation-cheat-sheet/9685) and [Understanding Data Access Patterns: When to Use Embedded, Reference, and Query List Fields](https://forums.pega.com/t/understanding-data-access-patterns-when-to-use-embedded-reference-and-query-list-fields/9593) I don’t know the particular requirment but it seems like you’re trying to implement the read only Query with a non Constellation pattern ---
**Author:** ![KamilJaneczek](https://yyz2.discourse-cdn.com/pega/user_avatar/forums.pega.com/kamiljaneczek/32/19116_2.png) [@KamilJaneczek](https://forums.pega.com/u/KamilJaneczek)\ **Post date:** [June 24, 2026, 5:34am UTC](https://forums.pega.com/t/pega-constellation-24-1-1-populating-values-inside-a-pop-up-in-a-view-using-api/12480/4 "2026-06-24T05:34:02Z")
Having a custom control to launch poral is fine but for modal rendering using standard way if no explicit need for customization. ---
**Author:** ![KarthikM16795015](https://avatars.discourse-cdn.com/v4/letter/k/a87d85/32.png) [@KarthikM16795015](https://forums.pega.com/u/KarthikM16795015)\ **Post date:** [June 25, 2026, 7:59am UTC](https://forums.pega.com/t/pega-constellation-24-1-1-populating-values-inside-a-pop-up-in-a-view-using-api/12480/5 "2026-06-25T07:59:49Z")
Oh yes, I have configured the Pre Data transform and made the steps to display the values coming from API onto the fields but still it is not displaying inside the view. However when I added hardcoded values it is working and have even checked in the Clipboard the value is getting copied onto the property but never displays. ---
**Author:** ![KarthikM16795015](https://avatars.discourse-cdn.com/v4/letter/k/a87d85/32.png) [@KarthikM16795015](https://forums.pega.com/u/KarthikM16795015)\ **Post date:** [June 25, 2026, 8:00am UTC](https://forums.pega.com/t/pega-constellation-24-1-1-populating-values-inside-a-pop-up-in-a-view-using-api/12480/6 "2026-06-25T08:00:32Z")
Sure, I will use these resources for my implementation and see it works. ---
**Author:** ![KarthikM16795015](https://avatars.discourse-cdn.com/v4/letter/k/a87d85/32.png) [@KarthikM16795015](https://forums.pega.com/u/KarthikM16795015)\ **Post date:** [June 25, 2026, 8:03am UTC](https://forums.pega.com/t/pega-constellation-24-1-1-populating-values-inside-a-pop-up-in-a-view-using-api/12480/7 "2026-06-25T08:03:38Z")
Thanks for the suggestion. Understood – I’ll use the standard modal rendering approach and keep the custom control only for launching the portal. But in my case there seems to be all the implementation part is fine and the value is also coming in the clipboard and onto the property. But not displaying in the fields for some reason.