If condition and parameter in power bI

[asdf1608]

I am converting the tableau calculated field to power BI.

Need to create a paramter like this in power BI

Then using that parameter to create a calculated field in power BI

IF [Last X Days] = 'Last 2 Days'
THEN [Date] >= TODAY() - 2
AND [Date]<= [End Date]

ELSEIF [Last X Days] = 'Last 4 Days'
THEN [Date]>=TODAY() - 4
AND [ Date]<= [End Date]

ELSEIF [Last X Days] = 'Last 7 Days'
THEN [ Date]>=TODAY() - 7
AND [ Date]<= [End Date]

ELSEIF [Last X Days] = 'Last 30 Days'
THEN [Date]>=TODAY() - 30
AND [ Date]<= [End Date]

END

Help in this is neede and urgent. 
Thanks in advance

[amitchandak]

@asdf1608 , In power bi we create an independent table and use those values to create a measure

example

https://medium.com/chandakamit/power-bi-when-i-felt-lazy-and-i-needed-too-many-measures-ed8de20d9f79

Measure Slicer: https://www.youtube.com/watch?v=JLkKTJrdv04&list=PLPaNVDMhUXGYzjFASXjdY7GNoFxvlkR54&index=19