# Using event dispatchers or variables across multiple levels **URL:** \ **Category:** Programming & Scripting\ **Tags:** unreal-engine\ **Created:** [May 12, 2017, 10:50am UTC](https://forums.unrealengine.com/t/using-event-dispatchers-or-variables-across-multiple-levels/393413 "2017-05-12T10:50:42Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![Shadowriver](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Shadowriver](https://forums.unrealengine.com/u/Shadowriver)\ **Post date:** [May 21, 2017, 4:50pm UTC](https://forums.unrealengine.com/t/using-event-dispatchers-or-variables-across-multiple-levels/393413/2 "2017-05-21T16:50:53Z")
When you switch level entire world is cleared and all actors assign to it are automatically deleted and all data in them is lost, only pure UObjects that are not assign to world will be still alive. UE4 has designated class to store game-wide varables and code called UGameInstance > **[A new, community-hosted Unreal Engine Wiki](https://forums.unrealengine.com/t/a-new-community-hosted-unreal-engine-wiki/141494)** > > After over a year in maintenance mode, the official Unreal Engine Wiki is now permanently offline. These resources now live on a new community-run Unreal Engine Community Wiki — https://unrealcommunity.wiki/! You will be able to find content from... Can’t find documentation that use blueprint but here is video tutorial using it in blueprint: [https://docs.unrealengine.com/latest/INT/Videos/PLZlv\_N0\_O1gYqSlbGQVKsRg6fpxWndZqZ/78XJYBfWXAA/](https://docs.unrealengine.com/latest/INT/Videos/PLZlv_N0_O1gYqSlbGQVKsRg6fpxWndZqZ/78XJYBfWXAA/) --- _[View the full topic](https://forums.unrealengine.com/t/using-event-dispatchers-or-variables-across-multiple-levels/393413)._