In fmodstudio, the setting of 7.1 audio and sound localization Paner works, but when loading with api, Paner doesn’t work. Is it necessary to set the api? I didn’t find a settable interface.
What version of FMOD are you using?
When you say
Is this the same paner on the event or are you creating one using
System::createDSPByType() to add the panner to a channel?
The documentation for all the paner parameters is under FMOD API | Core API Reference - Effect Parameters.