XSD Schema using maxOccurs and minOccurs in complextype - xsd

Question

I am writing a XSD schema file in Visual Studio 2010. I want to define a complex type to not be required and have unlimited entires in the xml. I used the minOccurs and maxOccurs attributes but I am getting an error in the editor that these attributes (minOccurs / maxOccurs) are not allowed. I can add them to simple types but not complex types. How do you define that a complex type can have 0 to many occurances?
Here is the xsd I was using:
<?xml version="1.0" encoding="utf-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="patient" minOccurs="0" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<xs:element name="to" type="xs:string"/>
<xs:element name="from" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>

Answer 1

That should still be valid XSD syntax. Is the VS editor just highlighting it and telling you that it's not allowed? It may just be reporting incorrectly.
Edit: Oh, you need a sequence of the complex types!
<?xml version="1.0" encoding="utf-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="patients">
<xs:complexType>
<xs:sequence>
<xs:element name="patient" minOccurs="0" maxOccurs="unbounded">
<xs:complexType>
<xs:sequence>
<xs:element name="to" type="xs:string"/>
<xs:element name="from" type="xs:string"/>
</xs:sequence>
</xs:complexType>
</xs:elemennt>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>