Syntax error in my query for sales analysis report

Hi All this new thread is in connection with my earlier thread http://scn.sap.com/thread/3881937 .I am trying to check if what ever Augusto has suggested would work for me.

But i am getting this error can you please let me know what could be going wrong.

Here is the Error

1). [SAP AG][LIBODBCHDB32 DLL][HDBODBC32] Syntax error or access violation;257 sql syntax error: incorrect syntax near "[": line 2  '' (SWEI)

This is the query i am trying

SELECT P."Code", P."CName",

[1] as 'Jan',

[2] as 'Feb',

[3] as 'Mar',

[4] as 'Apr',

[5] as 'May',

[6] as 'Jun',

[7] as 'Jul',

[8] as 'Aug',

[9] as 'Sep',

[10] as 'Oct',

[11] as 'Nov',

[12] as 'Dec'

FROM

(SELECT T0."ItemCode" as Code, T0."Dscription" as CName, T0."Quantity" as Qty,

MONTH(T0."DocDate") as month

FROM inv1 T0 Inner Join OINV T1 ON T0."DocEntry" = T1."DocEntry"

WHERE Year(T1."DocDate") = 2015

UNION

SELECT (T0."ItemCode") as Code, T0."Dscription" as CName, -1 * T0."Quantity" as Qty,

MONTH(T0."DocDate") as month

FROM RIN1 T0 Inner Join ORIN T1 ON T0."DocEntry" = T1."DocEntry"

WHERE Year(T1."DocDate") = 2015) S

PIVOT (SUM(Qty) FOR month IN

([1],[2],[3],[4],[5],[6],[7],[8],[9],[10],[11],[12])) P

Thanks for all the help,

Anjana