Db2 stored procedure problem (Pl help)

When I run the first stored procedure I'm getting the error

ERROR [42884] [IBM][CLI Driver][DB2/NT] SQL0440N No authorized routine named "REPORTSAMPLE" of type "PROCEDURE" having compatible arguments was found. SQLSTATE=42884

<code>

SET CURRENT SCHEMA = IS @
SET PATH = IS @


CREATE PROCEDURE RG

(
  IN ReportID INT,
  IN StartDate TIMESTAMP,
  IN EndDate TIMESTAMP
)
      LANGUAGE SQL
      DYNAMIC RESULT SETS 1
BEGIN

DECLARE Statement VARCHAR(1000);
DECLARE      SpName VARCHAR(50);

SELECT "SQLStoredProcedure" INTO SpName
  FROM "Report"
 WHERE "ReportID" = ReportID;
 
SET Statement = 'CALL ' || SpName || '(?,?)';            
PREPARE sl FROM Statement;
EXECUTE sl USING StartDate, EndDate;

END @

<code>
SET CURRENT SCHEMA = IS @
SET PATH = IS @

CREATE PROCEDURE ReportSample

(
  IN StartDate TIMESTAMP,
  IN EndDate TIMESTAMP
)
      LANGUAGE SQL
      DYNAMIC RESULT SETS 1
BEGIN

DECLARE REPORT_SQL CURSOR WITH RETURN FOR
  SELECT "SiteProfile"."SiteName",
             "SiteProfile"."ProfileName",
             "SiteProfile"."ApplicationName"
      FROM "SiteProfile"
   WHERE "SiteProfile"."SiteProfileID" <> 0;


OPEN REPORT_SQL;

END @


</code>

Thanks
j