Property MyArray As %String(CAPTION = "Массив текстовых значений") [ Collection = array ];

Property MyList As class1(CAPTION = "Лист экземпляров класса") [ Collection = list ];
// Далее обычные поля

Class class1 Extends %SerialObject [ ClassType = serial, ProcedureBlock ]
{

Property CheckDT As %Date [ InitialExpression = {+$H} ];
// остальные поля
Property Log As %String(CAPTION = "Log", MAXLEN =  250 );

}