[rules-users] decision table, business problem

We use JBoss Rules Version 3.0.5 for data mapping tasks with success. We tried to solve the following business case but did not find a nice solution. We have an object of type Item (Order line main pos.) which gets Features assigned. The source to derive the Features from are also Item objects (Order lines sub pos.). We asserted the sub pos Items to the working memory and use them in the condition column: RuleTable AddOns CONDITION item:Item(manufCode=="$1") Sub position of Design TOST TOBB30 TOMB30 CI TD PUMS CSR WTD-OVEN SDI TOBB12 TO42 We want to fill up a list of predefined features, starting with id 1100 e.g., with the item codes existing in the order they appear in this list. So we have to create an Object of type Feature with id *1100* and value=TOST if an Item with code TOST exists. If this was done and an Item with code TOBB30 also exists, we want to create a Feature with code *1101* and value TOBB30. If an item with code TOST does not exist, but an item with code TOBB30 exists, we want to create a Feature object with id *1100* and value TOBB30. So the Action is: assert ( new Feature( ?, item.getManufCode() ); But how to get an value starting at 1100 and increasing for each assert? We thought about using a global for this Feature id, but how to assign a starting value to it and increasing it for each successful rule line? Any ideas? Regards, Frank