Getting error while playing with Decision tables using TableType as source

Hi,

First I am creating the decision table based on table (Employee).

After activating the decision table , it created the Tabletype "_SYS_BIC"."srk/DT_TOTAL_SAL/TT" and the procedure is given below.

CREATE PROCEDURE "_SYS_BIC"."srk/DT_TOTAL_SAL"

     (OUT returned_tt "_SYS_BIC"."srk/DT_TOTAL_SAL/TT")

     LANGUAGE SQLSCRIPT READS SQL DATA WITH RESULT VIEW "_SYS_BIC"."srk/DT_TOTAL_SAL/RV" AS
BEGIN

     returned_tt = SELECT
                           "EID" AS "EID",
                           "ENAME" AS "ENAME",
                           "SAL" AS "SAL",
                           "COMM" AS "COMM",
                 CASE WHEN "SAL" = 10010
                    THEN CASE WHEN "COMM" = 110
                    THEN SAL+COMM
                    ELSE 0
                   END WHEN "SAL" = 10011
                    THEN CASE WHEN "COMM" = 111
                    THEN SAL+COMM
                    ELSE 0
               END WHEN "SAL" = 10012
               THEN CASE WHEN "COMM" = 112
               THEN SAL+COMM
               ELSE 0
               END
               ELSE 0
          END AS TOTAL_SAL
FROM "SRK"."EMPLOYEE"
;

END;

I invoked the procedure in SQLEditor and got the result.