Thx, ITWhisperer, I noticed that. now, I tried to use where AFRoute=case as below: basically, token can have 3 values, ALL/*, Agent/A, GroupAgent/GA, it works when Agent/A, GroupAgent/GA are selected from dropdown list, but when ALL/* is selected, it doesn't work. the following is where clause I used in query, and the other 3 are when 3 different values are selected, what shown in search. | where AFRoute=case($t_TargetType|s$ == "A","true",$t_TargetType|s$ == "GA","false",$t_TargetType|s$ == "*","*") | where AFRoute=case("*" == "A","true","*" == "GA","false","*" == "*","*") ( not working) | where AFRoute=case("GA" == "A","true","GA" == "GA","false","GA" == "*","*") (working) | where AFRoute=case("A" == "A","true","A" == "GA","false","A" == "*","*") (working) but if I directly add | search AFRoute=*, or | search AFRoute="*", it works. Kevin
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