<labeller type="svnRevisionLabeller">
    <workingDirectory>C:tempproject</workingDirectory>
    <executable>C:Program Files (x86)CollabNetSubversion Clientsvn.exe</executable>
    <username>user</username>
    <password>password</password>
</labeller>

public void Run(IIntegrationResult result)
{
     result.Label = this.Generate(result);
}