public void GetExpressionText()
{
var stack = SetupTos(Collection);
stack.DisplayText = DisplayText;
stack.FalseArmText = FalseArmText;
stack.TrueArmText = TrueArmText;
stack.Mode = RequireAllDecisionsToBeTrue ? Dev2DecisionMode.AND : Dev2DecisionMode.OR;
ExpressionText = DataListUtil.ConvertModelToJson(stack).ToString();
}