OpenLevel as Dedicated Server? Like as if I check "Dedicated Server" in editor?

Development World Creation
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I want to use OpenLevel options “text box” and type something in so that the map opens like as if I check the “Dedicated Server” checkbox in my editor.

How can I do this? “listen” is not a dedicated server, nor is leaving it blank. I know because there is nothing dedicated about those two options.

What is the commandline for dedicated?

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How do I do it from within this node:

https://docs.unrealengine.com/latest/INT/BlueprintAPI/Game/OpenLevel/index.html

See the “Options” text box?

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