Using TTS in addon

How can TTS capabilities be used from an add-on? Is there a “command” to be
used in the model definition? or using Simconnect? I wish I could “speak”
instructions under certain conditions or events. I have not found any
documentation on the subject, I have only been able to interpret very little
of the use of tts in locpak, but it seems that it only works for the ATC
subsystem. Ty Diego R.