Reverb doesn't function

Development Audio
1

Hello

I am new on Unreal Engine.
I want to evaluate the performance with audio.
So I try to apply this tutorial Unreal Engine 4 - Adding A Reverb Volume & Adjusting Decay - YouTube, but I have no reverb at all.
Did I miss something in the settings or anything else ?

Thanks in advance

2
3

Great !!!
Thanks. It works by following this video.