Hi guys, As you have probably noticed, today is my "decision tables day" :-). Before telling you what is going wrong, let me show you what kind of rule I try to put in my Drools 5.1 decision table: # for each window $window : Window($elements : elements) from $windows # for each manual annotation $an1 : ManualAnnotation( this inside $window && text == *"ToMatch"*) # if there is another manual annotation exists ManualAnnotation( this inside $window && text == *"ToMatch2"*) The only things I would like to parametrize are strings in bold. My decision table looks like this: CONDITION CONDITION CONDITION CONDITION CONDITION $an1 : ManualAnnotation exists ManualAnnotation $window : Window($elements... this inside $window text == "$1" this inside $window text == "$1" for each window annotation inside window Text annotation inside window Text N/A N/A ToMatch N/A ToMatch2 N/A N/A ToMatch3 N/A ToMatch4 Here are the problems (in bold) with the generated rule: $an1 : ManualAnnotation( *this inside $window == "N/A"* && text == *"*ToMatch*"*) exists ManualAnnotation( *this inside $window == "N/A"* && text == *"*ToMatch2*"*) *$window : Window($elements : elements) from $windows* * The order of the LHS "fact lines" of the generated rules is the not same as the order of appearance in the spreadsheet * The "this inside $window" is considered as a field name Do you know if I can solve those problems? I have tried to find a way to tell the decision table to extend another rule but I haven't found a keyword for that in the documentation. Maybe do I have to use rule templates? Many thanks, Best regards, Bruno.