No help?

Hello. I have a system with recalbox + kodi in a raspberry pi 3 model b plus and a board hifiberry dac plus.
I added in configuration file of recalbox the line
dtoverlay=hifiberry-dacplus
And everything work fine.

But when i start kodi from recalbox the audio don't exit no more from the hifiberry but from the hdmi port.

How can i setup kodi to exit audio with overlay from hifiberry?

Thank you