Add annotation to simpleContent (with extension)

Hi,
I have an issue that requires me to add the @XmlValueExtension annotation to an object attribute that is generated by a Simple content extending double.
I can't find how to bind this in my xjb file.
My XSD looks like :
```

```
I get the following classes
```
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "level1")
public class Level1
implements Serializable
{

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "level2")
public static class Level2
implements Serializable
{

protected UIList level3 = new UIArrayList();

public UIList getLevel3() {
return this.level3;
}

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "level3")
public static class Level3
implements Serializable
{
@XmlValue
@XmlSchemaType(name = "double")
protected Valuevalue;
@XmlAttribute(name = "level4", required = true)
protected Value level4;

/**
* Obtient la valeur de la propriété value.
*
* @return
* possible object is
* {@link String }
*
*/
public ValuegetValue() {
return value;
}

/**
* Définit la valeur de la propriété value.
*
* @param value
* allowed object is
* {@link String }
*
*/
public void setValue(Valuevalue) {
this.value = value;
}

}

}

}
```
I would like to add the annotation @XmlValueExtension to the protected Valuevalue;

I've tried the following :
```

@java.lang.SuppressWarnings("something")

```

But I can only annotate the class, not the value attribute.

Thanks for the help