HiI have parent object is called database and child object is called Task both are custom objects.on Task i am having lookup field called database name,i am having type is pick list field and group field is look up with public group both objects.when evere i create record on task object with databaname field, i want to update Type field and group field on task record same as database valuesi wrote this below trigger it's excuted but trigger not fire.trigger updatedatabasedatainTamplateTask on HLEP_Template_Task__c (after update) { set<id> dataids = New set<id>(); for(HLEP_Template_Task__c TT:Trigger.new){ dataids.add(TT.Database_Application_Name__c); } List<HLEP_Template_Task__c > Hlep = [Select id,Database_Application_Name__c,Database_Application_Type__c,Database_Application_Name__r.Xenoncore__Database_Application_Type__c,Sponsoring_group__c From HLEP_Template_Task__c Where id in:dataids]; list<HLEP_Template_Task__c > Hleptask = new list <HLEP_Template_Task__c >(); for(HLEP_Template_Task__c TTu:Hlep ){ TTu.Xenoncore__Database_Application_Type__c=TTu.Database_Application_Name__r.Xenoncore__Database_Application_Type__c; Hleptask.add(TTu); } update Hleptask;}Plz help me------------thanksNR