With the code below only DME1 and ADF1 work ok. NAV1 and COM1 show volume. The other buttons, while being present in the *.gltf do not work. Many thanks for help.
<Component ID="AudioPanel">
<UseTemplate Name="ASOBO_AudioPanel_Composite_Template">
<!-- Microphone Select (Transmit Source) -->
<COM1_NODE_ID>AudioPanel_Knob_COM_1</COM1_NODE_ID>
<COM2_NODE_ID>AudioPanel_Knob_COM_2</COM2_NODE_ID>
<COM3_NODE_ID>AudioPanel_Knob_COM_3</COM3_NODE_ID>
<COM4_NODE_ID>AudioPanel_Knob_COM_4</COM4_NODE_ID>
<COM5_NODE_ID>AudioPanel_Knob_COM_5</COM5_NODE_ID>
<!-- Monitor/Receive Buttons (2nd Row) -->
<COM1_MONITOR_NODE_ID>AudioPanel_Button_COM1_RX</COM1_MONITOR_NODE_ID>
<COM2_MONITOR_NODE_ID>AudioPanel_Button_COM2_RX</COM2_MONITOR_NODE_ID>
<COM3_MONITOR_NODE_ID>AudioPanel_Button_COM3_RX</COM3_MONITOR_NODE_ID>
<COM4_MONITOR_NODE_ID>AudioPanel_Button_COM4_RX</COM4_MONITOR_NODE_ID>
<COM5_MONITOR_NODE_ID>AudioPanel_Button_COM5_RX</COM5_MONITOR_NODE_ID>
<!-- Nav/ADF/DME Monitor -->
<NAV1_NODE_ID>AudioPanel_Button_NAV1</NAV1_NODE_ID>
<NAV2_NODE_ID>AudioPanel_Button_NAV2</NAV2_NODE_ID>
<ADF1_NODE_ID>AudioPanel_Button_ADF1</ADF1_NODE_ID>
<ADF2_NODE_ID>AudioPanel_Button_ADF2</ADF2_NODE_ID>
<DME1_NODE_ID>AudioPanel_Button_DME1</DME1_NODE_ID>
<DME2_NODE_ID>AudioPanel_Button_DME2</DME2_NODE_ID>
<!-- Other audio sources -->
<AUX_NODE_ID>AudioPanel_Button_AUX</AUX_NODE_ID>
<MARKER_NODE_ID>AudioPanel_Button_MKR</MARKER_NODE_ID>
<MARKER_SENS_NODE_ID>AudioPanel_Button_MKR_SENS</MARKER_SENS_NODE_ID>
<PA_NODE_ID>AudioPanel_Button_PA</PA_NODE_ID>
<SPKR_NODE_ID>AudioPanel_Button_SPKR</SPKR_NODE_ID>
<ICS_NODE_ID>AudioPanel_Button_ICS</ICS_NODE_ID>
<!-- Special -->
<SPLIT_NODE_ID>AudioPanel_Button_SPLIT</SPLIT_NODE_ID>
<MUTE_TEST_NODE_ID>AudioPanel_Button_MIC_MUTE</MUTE_TEST_NODE_ID>
<CREW_VOL_NODE_ID>AudioPanel_Knob_CREW_VOL</CREW_VOL_NODE_ID>
</UseTemplate>
</Component>