CE_LEFT_OUTER_JOIN ERROR

I am trying CE function and when I tried the code below it gave me an error.  If the remove the comment and try to use the regualr sql it works.

Any help appreciated. I followed the syntax mentioned int he help guide.

/********* Begin Procedure Script ************/

BEGIN

--out =

--select company,process_level,mbr_cd,total_spend

--from "ROI"."MV_MBR_PO_SPEND_ANALYSIS"

--left outer join "ROI"."MBR_XWALK"

--on ("ROI"."MV_MBR_PO_SPEND_ANALYSIS".PROCESS_LEVEL="ROI"."MBR_XWALK".MBR_PRCS_LVL);

out = CE_LEFT_OUTER_JOIN("ROI"."MV_MBR_PO_SPEND_ANALYSIS","ROI"."MBR_XWALK","ROI"."MV_MBR_PO_SPEND_ANALYSIS"."PROCESS_LEVEL","ROI"."MBR_XWALK"."MBR_PRCS_LVL",["ROI"."MV_MBR_PO_SPEND_ANALYSIS"."COMPANY","ROI"."MV_MBR_PO_SPEND_ANALYSIS"."PROCESS_LEVEL","ROI"."MBR_XWALK"."MBR_CD","ROI"."MV_MBR_PO_SPEND_ANALYSIS"."TOTAL_SPEND"]);

/*********