Dynamic MoM and WoW change calculation based on slicer selection

[Anonymous]

I have a table with date and ticket id. I have a measure that shows created tickets. I also have date tables with slicer options like below

date(mm/dd/yyyy)	ticket
6/21/2023	1
6/22/2023	2
6/27/2023	3
7/1/2023	4
7/2/2023	5
7/3/2023	6
7/7/2023	7
7/10/2023	8
7/12/2023	9
7/12/2023	10

Created tickets shows the right value as per slicer selection

however, I want to write a  MoM and WoW change measure that shows the respective calculations. I tried something like this but its not working. Please let me know where I am going wrong.

MoM WoW Change =

VAR SelectedType = SELECTEDVALUE('Dynamic Date Scope'[Type])

VAR SelectedStartDate = MIN('Dynamic Date Scope'[Date])

RETURN

SWITCH(

    TRUE(),

    SelectedType = "Monthly",

    VAR PreviousMonthStartDate = EOMONTH(SelectedStartDate, -1) + 1

    VAR PreviousMonthEndDate = EOMONTH(SelectedStartDate, -1)

    VAR PreviousMonthCases =

        CALCULATE(

            [CreatedTix],

            FILTER(

                ALL('DateTable'),

                'DateTable'[Date] >= PreviousMonthStartDate && 'DateTable'[Date] <= PreviousMonthEndDate

            )

        )

    RETURN

        [CreatedTix] - PreviousMonthCases,

    SelectedType = "Weekly",

    VAR PreviousWeekStartDate = SelectedStartDate - 7

    VAR PreviousWeekEndDate = SelectedStartDate - 1

    VAR PreviousWeekCases =

        CALCULATE(

            [CreatedTix],

            FILTER(

                ALL('DateTable'),

                'DateTable'[Date] >= PreviousWeekStartDate && 'DateTable'[Date] <= PreviousWeekEndDate

            )

        )

    RETURN

        [CreatedTix] - PreviousWeekCases,

    BLANK()

)

My expected solution is 

July 2023 shows 4 as july had (7-3=4) increase in tickets. 

Here's the sample pbix. Please help. test.pbix