# Box on button puzzle does not work

**URL:** <https://forums.unrealengine.com/t/box-on-button-puzzle-does-not-work/408806>\
**Category:** UI\
**Tags:** button, trigger, box, unreal-engine, open, puzzle, question\
**Created:** [November 6, 2017, 2:10pm UTC](https://forums.unrealengine.com/t/box-on-button-puzzle-does-not-work/408806 "2017-11-06T14:10:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Narike](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Narike](https://forums.unrealengine.com/u/Narike)\
**Post date:** [November 6, 2017, 2:10pm UTC](https://forums.unrealengine.com/t/box-on-button-puzzle-does-not-work/408806/1 "2017-11-06T14:10:06Z")

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Hello,

I am trying to get a simple puzzle working where the player picks up a box, places it on a button which then opens a door. I have most of the functionality working but the door does not open. Been trying for hours with no success. I am using interfaces to identify specific objects .

Thanks in advanced for any help!