Thanks for the suggestion but I get an "undefined" error in Splunk while using your proposal. I think that the error comes from the third option in the case clause. <eval token="form.location"> case(mvcount('form.location')==0,"ALL", // Reasoning: If there is nothing selected... location = "ALL" mvcount('form.location')>1 AND mvfind('form.location',"ALL")>0,"ALL", // Reasoning: if there are multiple selections including ALL.... location ="ALL" Unfortunately I dont understand the meaning of the last case. mvcount('form.location')>1 AND mvfind('form.location',"ALL")==0, mvfilter('form.location'!="ALL"),1==1,'form.location') I assume that the purpose is: "if there are many selections and none is ALL, just leave it untouched. " As it didnt work, I tried to replace it with some other code mvcount('form.location')>1 AND mvfind('form.location',"ALL")==0,'form.location') but it didnt work at all. Actually ALL get locked in the input field, it is not possible to select anything else or even to remove the ALL
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