EOS_SendKeyDown

OSC:EOS_SendKeyDown( key )

key is a string.

This function will send a key down to the console. If you want to send a button push (down and up), you should use the EOS_SendKey function. The key will remain held down until you send an key up or send an OSC Reset with the EOS_SendOSCReset function.
The name of the key generally matches the physical button on the console, but their are some exceptions. NOTE: for a list of supported key names, on the console, look in the magic sheet editor, select “Console Button” magic sheet item, and you will see the list of Hard Keys options.

Example.

OSC:EOS_SendKeyDown("Data")

This would hold down the Data key on the console.