GWT et Json complexe

bonjour, je n'arrives pas à parser mon flux json en objet

mon json :

Code:

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[{
  "products_id": "223",
  "products_name": "tuto",
  "products_description": "",
  "products_model": "tutu",
  "products_image": "http://...200.jpg",
  "products_price": "999",
  "products_devise": "€",
  "products_remise": 0,
  "products_price_remise": "999",
  "attibuts": [{
    "id": "2541",
    "text": "Candy",
    "description": "toto",
    "prefix" : "+",
    "price" : "8"
  }]

mon produit

Code:

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package.....client.entity;
 
import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.core.client.JsArray;
 
public class Produit extends JavaScriptObject {
 
	protected Produit() {}                                              
 
	// JSNI methods to get stock data.
	public final native String getSymbol() 					/*-{ return this.symbol; 				}-*/; 
	public final native String getProducts_id() 			/*-{ return this.products_id; 			}-*/;
	public final native String getProducts_name() 			/*-{ return this.products_name; 		}-*/;
	public final native String getProducts_description()	/*-{ return this.products_description; 	}-*/;
	public final native String getProducts_model() 			/*-{ return this.products_model; 		}-*/;
	public final native String getProducts_image() 			/*-{ return this.products_image; 		}-*/;
	public final native String getProducts_price() 			/*-{ return this.products_price;	 	}-*/;
	public final native String getProducts_devise() 		/*-{ return this.products_devise; 		}-*/;
	public final native String getproducts_price_remise() 	/*-{ return this.products_price_remise; }-*/;
	public final native int getproducts_remise() 			/*-{ return this.products_remise; 		}-*/;
	public final native JsArray<Attribut> getAttributs() 	/*-{ return this.attibuts; 				}-*/;	
}

et mon attribut :

Code:

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import com.google.gwt.core.client.JavaScriptObject;
 
public class Attribut extends JavaScriptObject {
 
	protected Attribut() {}                                              
 
	// JSNI methods to get stock data.
	public final native String getId() 					/*-{ return this.id; }-*/; 
	public final native String getText() 				/*-{ return this.text; }-*/; 
	public final native String getDescription()  		/*-{ return this.description; }-*/;
	public final native String getPrefix()  			/*-{ return this.prefix; }-*/;
	public final native String getPrice()  				/*-{ return this.price; }-*/;
}

Dans l'Entry point j'utilise ;

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private final native JsArray<Produit> asArrayOfStockData(String json) /*-{
    return eval(json);
  }-*/;

j'y arrive tres bien, tant que je ne mets pas la partie attribut. Apres ca plante
Je dois mal mapper le deuxieme objet ?
Avez vous une idée ?
Merci