How to make my expression dynamic by passing variable thru Slicer ?

Hi All

Below 2 expression working fine , But they are not dynamic they are static , it there a way to make the expression i can pass variable from Slicer ? So that i only need one table instead of many table :-

_Growth BRAND =

VAR competitor = SELECTEDVALUE ( 'SALES'[BRAND_C])

VAR currentYear = SELECTEDVALUE ( 'Date'[Year] )

VAR currentAMT = SUM ( 'SALES'[sales])

VAR previousAMT = SUMX ( FILTER ( ALLSELECTED( 'SALES' ), 'SALES'[BRAND_C] = competitor && RELATED ( 'Date'[Year] ) = currentYear - 1 ), 'SALES'[sales])

RETURN

DIVIDE ( currentAMT - previousAMT, previousAMT )

_Growth GROUP =

VAR competitor = SELECTEDVALUE ( 'SALES'[GROUP_CLASS])

VAR currentYear = SELECTEDVALUE ( 'Date'[Year] )

VAR currentAMT = SUM ( 'SALES'[sales])

VAR previousAMT = SUMX ( FILTER ( ALLSELECTED( 'SALES' ), 'SALES'[GROUP_CLASS] = competitor && RELATED ( 'Date'[Year] ) = currentYear - 1 ), 'SALES'[sales])

RETURN

DIVIDE ( currentAMT - previousAMT, previousAMT )

https://www.dropbox.com/s/78masspm617220k/PBT_SAMPLE%20100%20ROW%20JAN%202021%20V005.pbix?dl=0

Above link is my PBI file

Paul Yeo

Need Help