Dates Parameters for Initial and Final Headcount

[AnaAlbano]

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Hello Community!

I am trying to use a paramenter in my dashboard, but I am not getting the result I have. The context is: I have to show inital and final headcount and to count the number of employees, I use a column where I have "headcount", as in this table a have others groups as well, such as hires and so on.

I could create a initial and final, but when I try to use a paramenter to give user the possibility to show from when start/end, my headcount start to acumulate. These are my measures:

Initial:

CM_First Headcount =

CALCULATE(

    COUNTROWS(Combined),

    (Combined[CC_tbl_Combined_Table2]="Headcount"),

    DATESINPERIOD(dCalendar[Date],

    MIN(dCalendar[Date]),

    1,

    MONTH

    ))

Final

CM_Last Headcount2 =

CALCULATE(

    COUNTROWS(Combined),

    Combined[CC_tbl_Combined_Table2]="Headcount",

    DATEADD(

        dCalendar[Date],

        9,

        MONTH))

Does any would know how I should write to be able to use the parameter and if the person selects, for exemple: start point set/2022 and end point jan/23, to show the hires in this between?

I tryed to attach a file as reference, but I could not see the option to do it.

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Thank you so much!

Ana