stored proc help

i have a problem in stored proc the date range is not working if i execute following  in the procedure.I have attached the output too please check

exec DBSP_GetNote '','',null,null,'','03/04/2011','03/04/2011'


USE [eBidManager]
GO

/****** Object:  StoredProcedure [dbo].[DBSP_GetNote]    Script Date: 03/09/2011 17:49:04 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO












     
-- exec DBSP_GetNote null, null, null, null, null,'2011-03-08 12:19:41.417','2011-03-08 12:19:41.417'
--select * from dbo.TBL_Note  
--exec DBSP_GetNote '','',null,null,'','03/04/2011','03/04/2011'
CREATE PROCEDURE [dbo].[DBSP_GetNote]      
(                
 @NoteDescription varchar(200)='',                
 @NoteDefault bit,                
 @NoteStatus int,                
 @LastUpdatedBy int,
 @DivisionIDSearch int,      
 @LastUpdatedFrom Datetime = NULL,        
 @LastUpdatedTo Datetime = NULL
   
)                
as                
begin                
declare @SQL varchar(8000)                    
               
Set @SQL = 'SELECT DISTINCT n.NoteID, n.NoteDescription, dbo.fneBid_NoteDivision(n.NoteID) as DivisionName, s.StatusDescription, n.NoteDefault,      
   u1.UserFirstName + ' + '''  ''' + ' + u1.UserLastName as CreatedByUser, convert(varchar(10),n.CreatedDate,110) as CreatedDate,    
 u2.UserFirstName + ' + '''  ''' + ' + u2.UserLastName as LastUpdatedByUser, convert(varchar(10),n.LastUpdatedDate,110) as LastUpdatedDate                      
  FROM TBL_Note AS n                    
  INNER JOIN TBL_eBid_Status s on n.StatusID = s.StatusID    
  INNER JOIN dbo.TBL_NoteDivision nd on n.NoteID = nd.NoteID      
  INNER JOIN TBL_Division d on nd.DivisionID = d.DivisionID              
  LEFT JOIN TBL_eBid_User u1 on n.CreatedBy = u1.UserID            
  LEFT JOIN TBL_eBid_User u2 on n.LastUpdatedBy = u2.UserID                    
  Where n.NoteID > 0 '                
               
if(@NoteDescription is not null and @NoteDescription <> '')                
 Begin                
   Set @SQL =  @SQL + ' and n.NoteDescription LIKE ''%'+@NoteDescription+'%'''                
 End                
               
if(@NoteDefault = 1)        
 Begin                
   Set @SQL =  @SQL + ' and n.NoteDefault =  '+ convert(varchar(5), @NoteDefault)                
 End                
               
if(@NoteStatus > 0)                
 Begin                
   Set @SQL =  @SQL + ' and n.StatusID =  '+ convert(varchar(5),@NoteStatus )                
 End                
               
if(@LastUpdatedBy > 0)                
 Begin                
   Set @SQL =  @SQL + ' and n.LastUpdatedBy =  ' + convert(varchar(5),@LastUpdatedBY )                
 End    
IF(@DivisionIDSearch <> 0)        
BEGIN          
   SET @SQL = @SQL + ' and d.DivisionID = '+convert(varchar(5), @DivisionIDSearch)          
END      
         
 --If @LastUpdatedFrom Is Not Null        
 --Begin          
 -- Set @SQL = @SQL + ' and n.LastUpdatedDate >='''+convert(varchar(30),@LastUpdatedFrom,101)+''''          
 --End        
         
 --If @LastUpdatedTo Is Not Null          
 --Begin          
 -- Set @SQL = @SQL + ' and n.LastUpdatedDate <= '''+convert(varchar(30),@LastUpdatedTo,101)+''''          
 --End  
 
 --End                    
 
 

 --IF (@LastUpdatedFrom IS NOT NULL AND  @LastUpdatedTo  IS NOT NULL)
      --                  BEGIN
      --                              IF (@LastUpdatedFrom = @LastUpdatedTo )
      --                                    BEGIN
            
      --                                          SET @SQL=@SQL + ' AND  n.LastUpdatedDate ='''+convert(varchar(30),@LastUpdatedFrom,102)+''''
      --                                    END
      --                              ELSE
      --                                    BEGIN
      --                                          SET  @SQL =  @SQL + 'AND   n.LastUpdatedDate  BETWEEN ' + '''' +  +convert(varchar(30),@LastUpdatedFrom,102)+''''  + '''' + ' AND ' + '''' +   +convert(varchar(30),@LastUpdatedFrom,102)+''''
      --                                END            
      --                  END                     
   
   IF (@LastUpdatedFrom IS NOT NULL and  @LastUpdatedTo IS NOT NULL)
                              --BEGIN
                              
                                    --IF (@LastUpdatedFrom IS NOT NULL )
                                          BEGIN
                                                SET @SQL = @SQL+ ' AND n.LastUpdatedDate >='''+convert(varchar(30),@LastUpdatedFrom,101)+''''
                                          END
                                    ELSE
                                          BEGIN
                                                SET @SQL = @SQL + ' AND n.LastUpdatedDate <= '''+convert(varchar(30),@LastUpdatedTo,101)+''''  
                                    
                                    END
                                    
                                    
                              END       
   
   --end
print @SQL                
exec (@SQL)  
   
   
    --END

   
   
   
   

GO



output.xls.xlsx