[amibroker] Keep getting Error 31

["ftstrades" <ftspfolio@xxxxxxxxx>]

I keep getting Error 31 on line...
AND Close < Ref( EMA( Close, 200 ), -1 );
Cant figure out I tried with and without Parenthesis and Semicolons. 
Please help, Thanks.



SS = GetFnData("SharesShort"); 
SSPM = GetFnData("SharesShortPrevMonth");
ROE = GetFnData("ReturnOnEquity"); 
Filter = Close > 10
AND Volume > MA( Volume, 5 ) * 1.2 
AND SS < SSPM
AND Cross( EMA( Close, 3 ), EMA( Close, 15 )
AND Close > Ref( Close, -5
AND Ref( Close, -5 ) < Ref( Close, -21 )
AND GetFnData("EPSEstNextYear") >= GetFnData("EPS")
AND ROE > 15 )
AND Close < Ref( EMA( Close, 200 ), -1 );
AddColumn( Close, "Close  " );
AddColumn( Open, "Open  " );
AddColumn( High, "High  " );
AddColumn( Low, "Low  " );
AddColumn( Volume, "Volume      " ); 
AddColumn( GetFnData("EPSEstNextYear"), "EPSEstNextYear"); 
AddColumn( GetFnData("EPS"),"EPS");
AddColumn(ROE,"Return on Equity");
AddColumn(SS,"Shares Short"); 
AddColumn(SSPM,"Shares Short Prior Month");



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