Hi, Yes you can a string such as '1000','1001','1002' by just adding the single quotes to the exrpession below. I've added it to the code. The expression adds the field value to the variable if the variable is not null. It also adds a comma before (and now a single quote before and after) the field. There is some extra checks to handle the first field being added to the variable (by not adding a comma before the first value). I'm also adding the trim() method to make sure there is no blank space at the end of the string. I hope that helps! Magnus Code:"".equalsIgnoreCase($V{City_List}) ?$F{city} == null ? $V{City_List}:$V{City_List}+"'"+$F{city}.trim()+"'":$F{city} == null ? $V{City_List}:$V{City_List}.contains($F{city}.trim()) ? $V{City_List} : $V{City_List}+",'"+$F{city}.trim()"'"