Specifying Multi-value parameters with custom plugin

[Xavier D.]

I have written a multi-value plugin with parameter:

/**
* @required
* @parameter
*/
private String[] items;

public String[] getItems(){}
public void setItems(String[] labels) {}

However, mvn reports an error that it is not configured
(<items>VALUE</items>) whenever I try to specify the configuration as:
<configuration>
  <items>
    <item>1</item>
    <item>2</item>
    <label>3</item>
  </items>

or as:

  <items>
    <param>1</param>
    <param>2</param>
    <param>3</param>
  </items>

Xavier