Creating Dynamic Dax measure for a virtual table to filter table instead of calculated table(static)

Excellove15 

In the sample CreatedOn is returned as text, thus I added Createddate column as DATEVALUE() from it

Bar date is added as measure

Depends on your actual model, you may take it as SELECTEDVALUE() on Date table, whatever.

Filtered table is calculated as

Filtered Table = 
VAR belowDate =
    FILTER ( Main, Main[CreatedDate] < [pDate] )
VAR setRowId =
    ADDCOLUMNS (
        Main,
        "Id",
            ROWNUMBER (
                belowdate,
                ORDERBY ( Main[DataId], DESC ),
                PARTITIONBY ( Main[Dataset Id] )
            )
    )
VAR firstRows =
    FILTER ( setRowId, [Id] = 1 )
VAR result =
    SELECTCOLUMNS (
        firstRows,
        "CreatedDate", Main[CreatedDate],
        "DataId", Main[DataId],
        "Dataset Id", Main[Dataset Id],
        "Name", Main[Name],
        "Floor Area", Main[Floor Area]
    )
RETURN
    result

Resulting table is

You may return firstRows variables if don't care about extra Id column.