Do I need to do more setting for Steam while I'm using 'open level with listen'?

Development Programming & Scripting
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1

When I run the project on Steam, the code ‘open level’ will be fine, but ‘open level with Option:listen’ takes something wrong, even it’s a empty level. And if I just run it on local, there’s no bugs.
So I guess if I need to do more setting for Steam or not?
-DefaultEngine.ini has been set.
-The details are like: I’m now in level A, and when I call ‘open level B, Absolute:true, Option:listen’, it just re-open level A,or just restart project.

Can anyone help me,thanks.(ㄒoㄒ)

2

Problem is done, but I Have no idea where’s wrong.
I just solve it like this.

I new a project, copy all the files and code from A to B, then it works.

then I tried to rebuild the old project(del all but /Content and /code),It also works…；╭(╯^╰)╮