But,
to update the IsCompleted field, update the CompletionDate field. Once
the CompletionDate field is updated, the IsCompleted flag will be
updated.
Set < Id > setCaseIds = new Set < Id >();
for ( Case objCase : trigger.new ) {
if ( objCase.Status == ‘Working’ && trigger.oldMap.get( objCase.Id ).Status == ‘New’ ) {
setCaseIds.add( objCase.Id );
}
}
if ( setCaseIds.size() > 0 ) {
List < CaseMilestone > listCaseMilestones = new List < CaseMilestone >();
for ( CaseMilestone objCM : [ SELECT Id, CompletionDate FROM CaseMilestone WHERE CaseId IN: setCaseIds AND MilestoneType.Name = ‘First Response’ ] ) {
objCM.CompletionDate = System.now();
listCaseMilestones.add( objCM );
}
if ( listCaseMilestones.size() > 0 ) {
update listCaseMilestones;
}
}
}
