Bindsym or bincode not working

Hello,

I try to use bindsym or bincode to change my audio device, but both are not working on my Manjaro I3 desktop.

bindcode $mod+87 exec pacmd set-default-sink “alsa_output.pci-0000_02_00.1.hdmi-stereo-extra2”
bindsym $mod+KP_1 exec pacmd set-default-sink “alsa_output.pci-0000_02_00.1.hdmi-stereo-extra2”

The code 87 and KP_1 is my numpad 1 key.

Thank you in advance.