# C++関数ライブラリの引数にポインタ

**URL:** <https://forums.unrealengine.com/t/c/425762>\
**Category:** Programming & Scripting\
**Tags:** unreal-engine\
**Created:** [May 23, 2018, 11:59am UTC](https://forums.unrealengine.com/t/c/425762 "2018-05-23T11:59:51Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![HarryHighDef](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@HarryHighDef](https://forums.unrealengine.com/u/HarryHighDef)\
**Post date:** [May 23, 2018, 12:41pm UTC](https://forums.unrealengine.com/t/c/425762/2 "2018-05-23T12:41:54Z")

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You want Pass-by-Reference to be true on the variable

> **[What does Pass-By-Reference do?](https://forums.unrealengine.com/questions/156052/what-does-pass-by-reference-do.html)**
>
> I've been working with UE4 for 1-2 months now so I'm pretty familiar with most of the Blueprint/Event Graph stuff, however I am still a bit confused about the Pass-By-Reference checkbox on function/event inputs. I found plenty of threads here...

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