Gameplay Cameras Plugin command not recognized?

[syui]

Add the line DDCVar.NewGameplayCameraSystem.Enable to $project/Config/DefaultEngine.ini.

[/Script/Engine.DataDrivenConsoleVariableSettings]
+CVarsArray=(Type=CVarBool,Name="DDCVar.NewGameplayCameraSystem.Enable",ToolTip="",DefaultValueFloat=0.000000,DefaultValueInt=0,DefaultValueBool=True)

I’m currently running into an issue where collision doesn’t work when using the gameplay camera in the city sample.

Collision doesn't work when GameplayCameraSystem.Enable is enabled in city sample

In the Game animation sample, there is a Function(SetupCamera). When this is executed, the character collision does not work and the character is buried in the ground in the city sample map. How can I use the Gameplay Camera in the city sample?