Using dimension as header breaks all filter

I think I answered my own query by using an extra all:

 FILTER (
            ALL ('MIT enrol_load_procedure_tbl'[Year_Cyear_Index], 'MIT enrol_load_procedure_tbl'[ayr],'MIT enrol_load_procedure_tbl'[cyear],'MIT enrol_load_procedure_tbl'[va_date]),
            'MIT enrol_load_procedure_tbl'[Year_Cyear_Index]= yearx - 101
        ),
        all(Dim_course_year[Course_year_link])
          )

However this stops working if I try to add an extra all() for a second dimension table

=VAR yearx =
    MAX ( 'MIT enrol_load_procedure_tbl'[Year_Cyear_Index] )
RETURN
    CALCULATE (
        [FTE_Sum_End],
        FILTER (
            ALL ('MIT enrol_load_procedure_tbl'[Year_Cyear_Index], 'MIT enrol_load_procedure_tbl'[ayr],'MIT enrol_load_procedure_tbl'[cyear],'MIT enrol_load_procedure_tbl'[va_date]),
            'MIT enrol_load_procedure_tbl'[Year_Cyear_Index]= yearx - 101
        ),
        all(Dim_course_year[Course_year_link])
        ,all(Dim_date,Dim_date[Date_ayr])
          )

gives - Multiple table arguments are not allowed in the ALL function.