public void execute(){
		switch(operator)
		{
		case eOperator_Plus: this.setResult(lhs.getValue().add(rhs.getValue()));
			break;
		case eOperator_Subtract: this.setResult(lhs.getValue().subtract(rhs.getValue()));
			break;
		case eOperator_Divide: this.setResult(lhs.getValue().divide(rhs.getValue()));
			break;
		case eOperator_Multiply: this.setResult(lhs.getValue().multiply(rhs.getValue()));
		}
	}