How To Get Dynamic Attributes In Dataset

hi
i have a problem
i am writing a stored procedure which contains "EXECUTE" statment which excutes the query and retrieves the attributes what i want.
by using that procedure it is working fine and i am able to get the result

but i am not able to build the report why because this dataset not listing the attributes.


my procedure is like this :
--------------------------------------------
USE [HOST_BPM_COVLTCP]
GO

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO


ALTER PROC [dbo].[PB_Report_GetProjectAttributes]
@intProjectId INT
AS
BEGIN

DECLARE @STR_ATTRIBUTES VARCHAR(8000), @SRC_ATTRIBUTE_COLUMNS VARCHAR(8000), @SRC_ATRIBUTE_NAMES VARCHAR(8000)

SELECT
@STR_ATTRIBUTES = COALESCE(@STR_ATTRIBUTES + ',', '') + 'dbo.FindAndReplace(MAX(CASE WHEN ATTRIBUTE_ID = ' + CONVERT(VARCHAR, IDX) + ' THEN ISNULL(ATTRIBUTE_VALUE, '''') ELSE '''' END)) [' + CONVERT(VARCHAR, LABEL) + ']',
@SRC_ATTRIBUTE_COLUMNS = COALESCE(@SRC_ATTRIBUTE_COLUMNS + ',', '') + 'SRC.[' + CONVERT(VARCHAR, LABEL) + ']',
CONVERT(VARCHAR, IDX)
@SRC_ATRIBUTE_NAMES = COALESCE(@SRC_ATRIBUTE_NAMES + ',', '') + '''' + LABEL + ''' ATTR_' + CONVERT(VARCHAR, IDX)
FROM
PB_ATTRIBUTE

SELECT
@SRC_ATTRIBUTE_COLUMNS = (CASE WHEN @SRC_ATTRIBUTE_COLUMNS IS NULL THEN '' ELSE ',' + @SRC_ATTRIBUTE_COLUMNS END),
@STR_ATTRIBUTES = ISNULL(@STR_ATTRIBUTES, ''''' DUMMY_COL'),
@SRC_ATRIBUTE_NAMES = ISNULL(@SRC_ATRIBUTE_NAMES, ' '''' WHERE 1 <> 1')

EXEC
(
'
SELECT
DP.IDX PROJECT_ID, dbo.FindAndReplace(DP.CODE) [Project Code], dbo.FindAndReplace(DP.NAME) [Project Name], dbo.FindAndReplace(DP.LABEL) [Project] ' + @SRC_ATTRIBUTE_COLUMNS + ',
ISNULL(DP.CREATED_BY,'''') AS CREATED_BY, ISNULL(DP.MODIFIED_BY,'''') AS MODIFIED_BY,
DP.CREATED_DATE, DP.MODIFIED_DATE
FROM
DIM_PROJECT DP,
(
SELECT
' + @STR_ATTRIBUTES + ', PROJECT_ID
FROM
PB_PROJECT_ATTRIBUTE_VALUE
WHERE
PROJECT_ID = ' + @intProjectId + '
GROUP BY
PROJECT_ID
) SRC
WHERE
DP.IDX = ' + @intProjectId + ' AND
DP.IDX *= SRC.PROJECT_ID
ORDER BY DP.LABEL
'
)
----------
actually this procedure should result the following attributes

PROJECT_ID,
[Project Code],
[Project Name],
[Project],
[Nature of Change],
[Department Priority #],
[Project Start Date],
[Project End Date],
[Project Status],
[Project Justification],
[Project Request Sub-Type],
[Project Request Type],
[Project Request 2nd Sub-Type],
[Requesting Department],
[Capital Fund Number],


but i am not getting the attribute list in the dataset

anyone help me out