EventC_Input_Seq__c false IF(Contact__c =EventC_ID__r.Visitor1_ID__c, 1, IF(Contact__c =EventC_ID__r.Visitor2_ID__c, 2, IF(Contact__c =EventC_ID__r.Visitor3_ID__c, 3, IF(Contact__c =EventC_ID__r.Visitor4_ID__c, 4, IF(Contact__c =EventC_ID__r.Visitor5_ID__c, 5, 0 ))))) BlankAsZero EventC_Input_Seq 18 false 0 false Number false