Get difference in Matrix between two dates of a slicer (show zeros)

[Midguel]

Hi everyone, I'm having problems creating a measure that can calculate the difference between 2 dates in a slicer, i created this one but doesn't seems to work like i would want:

DELTA2 = 
VAR LASTDAY = [HOY]
VAR PREVDAY = [ayer]
VAR TOODAY = CALCULATE(SUM('DATA BASE'[Tons]),'DATA BASE'[FECHA DE CAPTURA] = LASTDAY,VALUES('DATA BASE'[OP]))
VAR YESTERDAY = CALCULATE(SUM('DATA BASE'[Tons]),'DATA BASE'[FECHA DE CAPTURA] = PREVDAY,VALUES('DATA BASE'[OP]))
RETURN
TOODAY-YESTERDAY

where:

[HOY] = CALCULATE(MAX('DATA BASE'[FECHA DE CAPTURA]),ALL('DATA BASE'))

and,

[ayer] = CALCULATE(MAX('DATA BASE'[FECHA DE CAPTURA]) - 1,ALL('DATA BASE'))

my result is this:

it only kinda works with the last 2 dates, also i filtered the results of DELTA2 = 0, so it only displays the changes between days.
I would like to reach a matrix like this (whatever date i choose, will be always one day and the next):

if anyone can help me, i would really apreciatted.

[Midguel]

How can i point to a slicer where i can select the days? instead of have to use 2 measures (today & yesterday) inside this measure