# UIPages not visible in Theme cosmo

**URL:** <https://forums.pega.com/t/uipages-not-visible-in-theme-cosmo/5168>\
**Category:** General\
**Tags:** theme-cosmos, app-studio, pega-platform\
**Created:** [October 10, 2023, 5:21am UTC](https://forums.pega.com/t/uipages-not-visible-in-theme-cosmo/5168 "2023-10-10T05:21:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ParthibanU](https://avatars.discourse-cdn.com/v4/letter/p/c67d28/32.png) [@ParthibanU](https://forums.pega.com/u/ParthibanU)\
**Post date:** [October 10, 2023, 5:21am UTC](https://forums.pega.com/t/uipages-not-visible-in-theme-cosmo/5168/1 "2023-10-10T05:21:29Z")

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Hi Everyone,

When I build a application using theme cosmos, I am unable to find “Pages” on clicking of Design mode in App studio. Can anyone help on this

It is in my personal edition

Thanks

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<div class="post-metadata">

**Author:** ![Bhumireddy](https://yyz2.discourse-cdn.com/pega/user_avatar/forums.pega.com/bhumireddy/32/23248_2.png) [@Bhumireddy](https://forums.pega.com/u/Bhumireddy)\
**Post date:** [October 10, 2023, 6:44am UTC](https://forums.pega.com/t/uipages-not-visible-in-theme-cosmo/5168/2 "2023-10-10T06:44:48Z")

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Hi @ParthibanU

Could you please refer below article,

> **[UIPages In Pega 8.7 Cosmos](https://forums.pega.com/question/uipages-pega-87-cosmos)**
>
> Hi, I just created one portal in Pega 8.7 using App Studio. And modifying it in DEV studio. I observed one change in class structure. It A-B-UIPages What is this -UIPages?

[https://support.pega.com/question/creating-custome-portal-pega-87-using-cosmos](https://support.pega.com/question/creating-custome-portal-pega-87-using-cosmos)

I hope this will help you.

**Thanks,**

**Ashok**