DAX Measure, Switch with multiple criteria - if-statement

Question

Thank you for you help in advance.
I am trying to create a measure to sum the adjusted value of certain column depending on the date:
The logic is:
If Date is before 06/22/2022,
Then:
For Sales Code "A0001", "A0003" and "A0004", adjust their Sales Count (in another column) by *3
For Sales Code "B0001", adjust their Sales Count (in another column) by *4,
For Sales Code "C0001", adjust their Sales Count (in another column) by *5,
Else Sales Count stay the same
This is what I have so far but its not calculating correctly
Measure =
SUMX('TABLE’,
SWITCH (
'TABLE'[Date] < DATE(2022,06,22)
'TABLE'[Sales Code] in {"A0001", "A0003", "A0004"}, 'TABLE'[Sales Count] * 3,
'TABLE'[Sales Code] in {"B0001"}, 'TABLE'[Sales Count] * 4,
'TABLE'[Sales Code] in {"C0001"}, 'TABLE'[Sales Count] * 5,
'TABLE'[Sales Count]
)
)

Answer 1

First of all, you've missed the first argument of SWITCH() function. It expects expression with TRUE/FALSE result at this place.
There is a hint to use TRUE() as first argument, but it's not a universal solution and should be used carefully. To know more about potential problems of using this hint read this.
Then I would like to remind you that you can use && (AND) and || (OR) to write complex conditions.
So, the solution of your problem looks like:
Measure =
SUMX(
'TABLE',
SWITCH (
TRUE,
'TABLE'[Date] < DATE(2022,06,22)
&& 'TABLE'[Sales Code] in {"A0001", "A0003", "A0004"},
'TABLE'[Sales Count] * 3,
'TABLE'[Date] < DATE(2022,06,22)
&& 'TABLE'[Sales Code] in {"B0001"},
'TABLE'[Sales Count] * 4,
'TABLE'[Date] < DATE(2022,06,22)
&& 'TABLE'[Sales Code] in {"C0001"},
'TABLE'[Sales Count] * 5,
'TABLE'[Sales Count]
)
)
For those who are new with SWITCH() function I would advice to visit this page.