QGC with the Alta X and UGCS

I have been trying to utilize UGCS with our Alta X. While I have UCGS communicating with the aircraft, I am unable to upload missions.
I am aware of a setting which requires a change of CBRK_PARAMBLOCK from
“QGroundControl” only to “All”. The value in this setting however is numerical. Does anyone know which number value would be “All”?