Need help to build measure with filter switch based on user uploaded list

[techgirlangle]

I need help with building a DAX measure to count list of loans that are existing + any new eligible loans. Eligible loans are calculated with a different measure. User has an option to upload a list of new loans to be included for check. Default behaviour is user has not supplied an inclusion list then include existing + all fitting criteria or include existing + user selected. I am looking at adding the false part for switch statement but can't get it working. I don't feel I am doing it correct. What should be the right way to achieve this. Thanks

CountOfLoans = CALCULATE (

    COUNT ( 'table'[Loanid] ),

    FILTER('table',

            AND(

                OR('table'[Filter1] = "Existing",

                    SWITCH(ISEMPTY(TaggedLoanPool),

                        TRUE(),

                        AND(

                            'table'[Filter1] = "New",

                            'Measures'[Eligible] = "Yes"

                        ),
                       FALSE(),
                        'table'[Loanid] = TaggedLoanPool[loanid]

                    )

                ),

                'table'[Current balance] > 0

            )

        )

    )

[techgirlangle · Accepted solution]

I have found a possible solution. The issue was even though I had build a relationship between the two datasets it was still coming up as limited relationship which was not allowing to use RELATED function and because of various different criteria I couldn't use RELATEDTABLE. I have resolved by using VALUES function with IN operator.