[rules-users] Getting Exception while using Array in rules template

I am getting exception when using Array in combination with "in (...)". Below is the exception [Error: unable to resolve method: java.util.HashMap.countyName() [arglength=0]] and below is the template I have created template header stateName countyName[] totalPremium package org.drools.bpmn2 template "Premium" stateName totalPremium rule "Premium_(a){row.rowNumber}" ruleflow-group "insurance premium" when Input(stateName == @{stateName}, countyName in (@{countyName})) then System.out.println("total premium " + @{totalPremium}); end end template the excel sheet is having the data, the column corresponds to countyName as CSV value with variable number of variables either empty or 1 or 2 and so on. If I give the when like below it works (with countyName0 instead of countyName). when Input(stateName == @{stateName}, countyName in (@{countyName0})) Do I need to use foreach to generate the countyName sequence like countyName0, countyName1 .. etc to put it in the "in (...)" condition? I didnt find much documention about templates that covers foreach with in. Please help. Any examples or samples would be helpful. -- Thanks, Mani