Actually it is a event from an application usecase
Thanks for your reply and I think I am very close with your help.
This rule is giving error Line 99:5 mismatched input 'or' in rule "usecase-test"]

rule "usecase-test"
    when
    $e0 : Event ()
    ParsedValue(event == $e0, ruleId == "0", varName == "V0_1", $e0_V0_1_varStringValue : varStringValue)
    ParsedValue(event == $e0, ruleId == "0", varName == "V0_2", $e0_V0_2_varStringValue : varStringValue)
    accumulate( 
    ParsedValue( ruleId == "0", varName == "V0_1",  varStringValue == $e0_V0_1_varStringValue, $e : event ) 
    and 
    ParsedValue( event == $e, ruleId == "0", varName == "V0_2", varStringValue == $e0_V0_2_varStringValue ) 
    and 
    (
    	(
    		ParsedValue( event == $e, ruleId == "1", varName == "V1_1", varStringValue == "X1_1")
    		and
    		ParsedValue( event == $e, ruleId == "1", varName == "V1_2", varStringValue == "X1_2")
    	)
    	or <b>[<<Line 99]</b>
    	(
    		ParsedValue( event == $e, ruleId == "2", varName == "V2_1", varStringValue == "X2_1")
    		and
    		ParsedValue( event == $e, ruleId == "2", varName == "V2_2", varStringValue == "X2_2")
    	)
    );
    $es: collectSet( $e ); 
    $es.size() >= 5 ) 
    
	then
        System.out.println( "usecase-test" + $es.size());
end


The Event comes from application and is parsed for values.
The event from same application will have the same values for ruleId=0, varName-V0_1 and V0_2
So any event with same values for V0_1 and V0_2 is coming from same application.

The rule says if from same application
you have values which has this combination
ruleId == "1", varName == "V1_1", varStringValue == "X1_1"
ruleId == "1", varName == "V1_2", varStringValue == "X1_2"
or this combination
ruleId == "2", varName == "V2_1", varStringValue == "X2_1"
ruleId == "2", varName == "V2_2", varStringValue == "X2_2"
or this combination say
ruleId == "3", varName == "V3_1", varStringValue == "X3_1"
ruleId == "3", varName == "V3_2", varStringValue == "X3_2"
ruleId == "3", varName == "V3_3", varStringValue == "X3_3"

In pure english it is
First I have to identify if I am dealing with events from same application
This is by comparing (2) parsed values V0_1 and V0_2. If they are same across events .. then it having same source.
Next lets check for other conditions..
>From Rule 1.. I want to check values of V1_1 and V1_2, if there is a issue
>From Rule 2.. I want to check values of V2_1 and V2_2, if there is a issue

Now I do not want to raise exception as soon as condition is met.. since the problem can occur and can be ignored. But if it happens more than 5 times from the same source, then I want to raise an alert.

	
	
	
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