How to deal with relation

Hi

I am trying to import two beans(TestBean and HelperBean)into my Web Dynpro project to create a model. These beans are dealing with a List(ArrayList). This List is considered as a Relation. I am facing problem in handling this relation.

I am having both the TestBean and HelperBean in the same package. Below is the code of TestBean. This bean is in turn calling HelperBean ,which is returning a List.

I am getting an error while creating model -

<b>[Error]: There are one or more relations unresolved. Importing the model without resolvoing the relations might result in erratic output.</b>

<u><b>Code For TestBean</b></u>

public class TestBean implements Serializable{
	private List customerList= null;
	HelperBean helper = new HelperBean();
 
	
		public void execute(){
		
		try{
								customerList = (ArrayList)helper.getCustomerList();
		
			
			}
			catch(Exception ex){
			
				ex.printStackTrace();
			
			}
		}
 
	
	/**
	 * @return
	 */
	public List getCustomerList() {
		return customerList;
	}
 
	/**
	 * @param list
	 */
	public void setCustomerList(List list) {
		customerList = list;
	}

I am new to Web Dynpro and don't know how to deal with relation.Please inform if there is some solution.

regards,

Sujit