you need to read this carefully https://sway.office.com/S5J4d9Jp4Y9LdVFx?ref=Link
If Ev1=1, then Steam preinfusion will always happen by default if the steam boiler is above 115C, below that temp, it will default to bloom phase.
What you want to do is not within the programming. It can only be achieved by having buttons set up correctly for both types of preinfusion and turning the steam boiler off, just before the shot if you want it to default to bloom phase. A simple press and hold the minus button for 3 seconds.