I created a simple header class:

```
Class Sample.Headers Extends %SOAP.Header
{
    Parameter NAMESPACE = "http://tempuri.org";
    Property UserName As %String;
}

```

In the web service I made sure to set the correct namespace in the `SOAPHEADERS` parameter:

```
Parameter SOAPHEADERS = "UserName:Sample.Headers";

```

I send the following XML using SoapUI:

```
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:tem="http://tempuri.org">
   <soapenv:Header>
       <tem:UserName>This is the header</tem:UserName>
   </soapenv:Header>
   <soapenv:Body>
      <tem:Test>
         <!--Optional:-->
         <tem:argAge>10</tem:argAge>
      </tem:Test>
   </soapenv:Body>
</soapenv:Envelope>

```

I get the following error:

> 
> ERROR #6254: Tag expected, XML input, This is the header, is not in
>  proper format as child of UserName (ending at line 3 character 18).
> 
> 
> 

What is the correct format for the XML so that UserName is set correctly?