right click on the trigger button and choose snapshots variation
then you take a snapshot of the variation that is currently being used in the flex phraser
it is AWESOME to have different plex phrases on one keyboard layout and when you edit these phlexphrases yourself the possibilities are endless
but i do not find a way to assign the different phrases directly to the keyboard… that would even be greater
have not found a single preset that is using this… pffft…, but i`m still on the process of going trough things 
kind regards,
R.