Sound Attenuation ignored in editor with BluePrint

Hello,
I am working on an animation with the Sequencer in Unreal Engine 4.
With TimeEvents I run the function “Play Sound at Location” in a BluePrint, but in the editor the attenuation settings of the sound seem be completely ignored while they work properly in game.

I need hear the sound attenuation in the editor, how can I fix this problem?
Thank you for your answers !