我已经设置了这些条件:$objConditionalRed->setConditionType(conditional::CONDITION_CELLIS);$objConditionalRed->setOperatorType(conditional::OPERATOR_LESSTHAN);$objConditionalRed->addCondition('50');$objConditionalRed->getStyle()->getFill()->setFillType(fill::FILL_SOLID);$objConditionalRed->getStyle()->getFi