Getting Min / Max LSN for CDC Table Instance for given date in SQL Server 2012

Am trying to get the net changes on CDC enabled table by passing Min and Max dates.  But is throwing below error.    

Msg 313, Level 16, State 3, Line 24    An insufficient number of arguments were supplied for the procedure or function cdc.fn_cdc_get_net_changes_ ... 

My code is as below:   

DECLARE @CDate DATE = '2013-03-18' --This is the date after the CDC was enabled on the table    DECLARE @count INT;    DECLARE @lsnStartDatetime DATETIME;    DECLARE @lsnEndDateTime DATETIME;    DECLARE @begin_time DATETIME ,    @end_time DATETIME ,    @from_lsn BINARY(10) ,    @to_lsn BINARY(10);    SELECT  @lsnStartDatetime = CAST(CAST(@CDate AS NVARCHAR(10)) + ' 00:00:00' AS DATETIME)    SELECT  @lsnEndDateTime = CAST(CAST(@CDate AS NVARCHAR(10)) + ' 23:59:59' AS DATETIME)    SET @from_lsn = sys.fn_cdc_map_time_to_lsn('smallest greater than or equal',                                           @lsnStartDatetime);    SET @to_lsn = sys.fn_cdc_map_time_to_lsn('largest less than or equal',                                         @lsnEndDateTime);    if exists (select * from sys.objects where name = 'EmployeeCDCbyDate' and type = 'u')    drop table etl.EmployeeCDCbyDate    SELECT  *    FROM    cdc.fn_cdc_get_net_changes_employee(@from_lsn, @to_lsn, N'all')

Is it the from_lsn and to_lsn getting from sys.fn_cdc_map_time_to_lsn doesnt match with is mapped aginst the cdc table 'employee'

Below code works fine; but it gets all net changes from min max lsn's.

DECLARE @min_lsn BINARY(10) = sys.fn_cdc_get_min_lsn ('employee')    DECLARE @max_lsn BINARY(10) = sys.fn_cdc_get_max_lsn ()    SELECT * FROM cdc.fn_cdc_get_net_changes_employee(@min_lsn, @max_lsn, 'all') ORDER BY 1 desc

What i need is to get min and max lsn of cdc instance for given date and get the net changes for that date. Any clues?

**Edit:**

This works fine with first table when i enable on bunch of tables.

Ex:

USE ERP    EXEC sys.sp_cdc_disable_db    EXEC sys.sp_cdc_enable_db    EXEC sys.sp_cdc_enable_table @source_schema = N'dbo',     @source_name = N'Employee',     @capture_instance = 'Employee',     @supports_net_changes =1,    @role_name = NULL      EXEC sys.sp_cdc_enable_table @source_schema = N'dbo',     @source_name = N'StoreListing',     @capture_instance = 'StoreListing',     @supports_net_changes =1,     @role_name = NULL    Go

This works fine with Employee table.  If i change the order in which they are CDC enabled (if i put storelist first and employee next), then it works fine with employee listing.

Sree