trigger AutoStudentIDTrigger on Contact (before insert){

    list<Contact> l1 =

                [SELECT Id, Type_of_bursary_contact__c, Student_ID_New__c, Do_Not_Auto_Generate_Student_ID__c FROM Contact WHERE
                Type_of_bursary_contact__c = 'Student' AND RecordTypeId in (SELECT Id FROM RecordType WHERE Name = 'Bursary Contact')  AND Student_ID_New__c != NULL
                ORDER BY Student_ID_New__c desc limit 1];

    list<Contact> l2 =

                [SELECT Id, Beneficiary_Number__c,Role_in_group__c FROM Contact WHERE
                RecordTypeId in (SELECT Id FROM RecordType WHERE Name = 'Community Contact')  AND Beneficiary_Number__c != NULL
                ORDER BY Beneficiary_Number__c desc limit 1];

                Integer l1size = l1.size();
                Integer l2size = l2.size();

                Decimal NewLatestStudentID = 0.0;
                Decimal NewLatestBeneficiaryID = 0.0;

                If(l1size > 0){
                    try {
                        NewLatestStudentID = l1[0].Student_ID_New__c;
                        }

                        Catch (System.NullPointerException e) {
                            System.debug('The following exception has occurred: ' + e.getMessage());
                        }

                        }


                If(l2size > 0){

                NewLatestBeneficiaryID = l2[0].Beneficiary_Number__c;}

If(trigger.isInsert){
       for(Contact li:Trigger.new) {

        If(li.Type_of_bursary_contact__c == 'Student' & li.Do_Not_Auto_Generate_Student_ID__c == FALSE ){

            li.Student_ID_New__c = NewLatestStudentID+1; }


        If(li.Role_in_group__c != Null & li.Do_Not_Auto_Generate_Beneficiary_Number__c == FALSE ){

            li.Beneficiary_Number__c = NewLatestBeneficiaryID+1; }

       }


    }




}