TaskAttribute markasOperation = model.getTaskData().getRoot().getAttribute(TaskAttribute.PREFIX_OPERATION + RedmineOperation.markas.toString());
if(markasOperation!=null) {
TaskAttribute operation = model.getTaskData().getRoot().getAttribute(TaskAttribute.OPERATION);
model.getTaskData().getAttributeMapper().setValue(operation, RedmineOperation.markas.toString());
model.attributeChanged(operation);
AbstractAttributeEditor statusChgEditor = attributeEditors.get(changedAttribute);
if(statusChgEditor!=null) {
Control control = statusChgEditor.getControl();
if(control!=null && control instanceof CCombo) {