[rules-users] Rule Templates and null values

Hi all. I question myself if I can get the Rule Templates to works like it is in Excel: If one “parameter” is not set (null), the whole line of the template is skipped? Since we want to build a template for a lot of rules, fed from a database. There some conditions can be null, so they should not be included in the rule at all. Has anybody an idea to this? I haven’t found anything, neither in the docs, nor in the testcases… Thanks a lot Bernd