How to enable "ambisonic" effect in Oculus audio unreal plugin? (Unreal 4.25,4.26)

Hi all,

How to enable "ambisonic" effect in Oculus audio plugin? (For Unreal 4.25,4.26)

I does not hear the ambisonic effect by my test.

Here is my step:

Step1: Enable Oculus audio plugin in unreal and import a ambisonic audio file on the Map

Step2: Create a "soundfield submix"

Step3: In soundfield submix, select "Oculus Binaural"

Step4: Select soundfield submix on "sound wave file detail setting"

Step5: Create a "SoundAttenuation" and enable Spatialization in the Attenuation Settings.

Step6: Select soundfield submix on "sound wave file detail setting"

Step7: Play the Map

Result: Does't hear any sound