we want to get the source IP field from login history object. We do not know how to get it. We can get the IP but the system randomly chooses a one. Does anybody have any idea? thanks

trigger ProductBriefHistory on Product_Brief__c (after update) { List trackedFields = SObjectType.Product_Brief__c.FieldSets.PBHistoryTracking.getFields(); if (trackedFields.isEmpty()) return;

LoginHistory src = [SELECT SourceIp from LoginHistory WHERE UserId =:UserInfo.getUserId() Limit 1];

List fieldChanges = new List();

List apiNameList = new List();

if(Trigger.isUpdate){ for (Product_Brief__c aNew : trigger.new) {

Product_Brief__c aOld = trigger.oldmap.get(aNew.Id);

for (Schema.FieldSetMember fsm : trackedFields) {

String fieldName = fsm.getFieldPath(); String fieldLabel = fsm.getLabel();

if (aNew.get(fieldName) != aOld.get(fieldName)) {

String oldValue = String.valueOf(aOld.get(fieldName)); String newValue = String.valueOf(aNew.get(fieldName)); if (oldValue != null && oldValue.length()>255) oldValue = oldValue.substring(0,255); if (newValue != null && newValue.length()>255) newValue = newValue.substring(0,255);

Product_Brief_History__c aht = new Product_Brief_History__c(); aht.Product_Brief__c = aNew.Id; aht.name__c = fieldLabel; aht.apiName__c = fieldName;

aht.Updated_By__c = UserInfo.getUserId(); aht.OldValue__c = oldValue; aht.NewValue__c = newValue; aht.Source_IP__c = src.SourceIp;

apiNameList.add(aht.apiName__c); fieldChanges.add(aht); }
} } } if (!fieldChanges.isEmpty()) { insert fieldChanges; }

}