[rules-users] retract the items from accumulate

Can i retract the objects from accumulate function rule "Brand base free Item " salience 10 when brand_total:Number(doubleValue >=1500) from accumulate ( sa:SLS_SALES_DTLS( PK!=null, PK.ITEM_ID.BRAND_CD.BRAND_CD=="N00" ) , init ( double single_total=0; ), action (single_total=single_total+(sa.getTRN_QTY()* sa.getPK().getITEM_ID().getSALES_TO_BASE_CONV() // I want to retract the sa over here ); ), result (single_total ) ); then double item_discounted=brand_total.doubleValue()/ 1500; System.out.println("The discount given qty "+item_discounted+" multiplied slot 10"); double item_left=brand_total.doubleValue()%1500; if(item_left>=1) { doit(item_left,"N00"); } end