The If ... Else Statement In SQL Query.. Please Help To Correct Query.. Thank You

  1 SELECT distinct A.EAIndex,
2 A.ChainCode AS ChainCode,
3 A.JobDate,
4 C.BillerName,
5 B.BusinessCode,
6 D.ChainName,
7 A.BillBegDate,
8 A.BillEndDate,
9 A.PostDate,
10 A.BillCount,
11 A.ChAmount,
12 A.PostAmount,
13 A.ProChargeFee,
14 A.BalanceStatus AS BalanceStatus,
15 B.BillerInfoCode AS BillerInfoCode ,
16 CONVERT(varchar(10), A.BalanceDate, 112)BalanceDate,
17 A.AdjustDate,
18 C.BillerCode ,
19 (a.ChAmount- a.ProChargeFee) AS Fee,
20 E.EABillerCode, E.RelAdjustDate
21 FROM ZT_EAccount A
22 Inner Join ZT_BillerInfo B On Right('00000'+Rtrim(Ltrim(A.BillerCode)),5) = Right('00000'+Rtrim(Ltrim(B.BillerInfoCode)),5)
23 Inner Join ZT_Biller C ON B.ParentCode = C.BillerCode
24 Inner Join ZT_Chain D On A.ChainCode = D.ChainCode
25 Inner Join ZT_EAccountAdjust E ON a.EAIndex=E.EAIndex and a.BillerCode=E.BusCode
26 Where A.JobDate BETWEEN '20071001' AND '20071005' AND C.CompanyCode='533'
 In line 13
I want to add a Query to make sure if ZT_BillerInfo.Rmflag = 1, if it's =1 then ProChargeFee =0
if ZT_BillerInfo.RmFlag =0 , then ProChargeFee = a.ProChargeFee.

I add this line

�Case B.RmFlag = '1' then 0 else A.ProChargeFee 】

instead of Line 13 (A.ProChargeFee)

but I execute Sql I got error message on the line I have jsut modified..

can you please help me to know why and how to correct it?

thank you very much