Replace an empty string with N/A in journey We are trying to do a replace of an empty attribute in the client profile with N/A in a custom action in a journey. We tried replace and replaceAll but neither gave us the solution we needed.REPLACEconcat(concat(concat(concat(concat(concat(concat(concat(concat(concat(concat(concat(replace(#{ExperiencePlatform.ProfileFieldGroup.profile.person.name.firstName},'','NA'), ' '), replace(#{ExperiencePlatform.ProfileFieldGroup.profile.person.name.lastName},'', 'NA') ) , ' is customer since ' ) , replace(toString(#{ExperiencePlatform.ProfileFieldGroup.profile.customerSinceDate}),'','NA')) , ' has home at ') , replace(#{ExperiencePlatform.ProfileFieldGroup.profile..homeName}, '', 'NA')) , ' has potential total assets of ') , replace(toString(#{ExperiencePlatform.ProfileFieldGroup.profile.TotalAssetAmount}), '', 'NA'))