I need help, please!!!

When I use session.load, the nhibernate don´t give me the list of relationship of object, see:

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
<class name="Model.Area, Model" table="TAB_X_AREA">
<id name="Codigo" column="AREA_COD" type="String" length="5">
<generator class="assigned" />
</id>
<property name="Descricao" column= "AREA_DESCRICAO" type="String" length="50"/>
<property name="Ativa" column="AREA_ATIVA" type="String" length="1"/>

<set
name="ListaEquipamentos"
inverse="false"
lazy="false">
<key column="AREA_COD"/>
<one-to-many class="Model.Equipamento.Equipamento, Model"/>
</set>

</class>
</hibernate-mapping>


<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
<class name="Model.Equipamento.Equipamento, Model" table="TAB_X_EQUIPAMENTO">
<id name="Codigo" column="EQUIPAMENTO_COD" type="String" length="5">
<generator class="assigned" />
</id>
<property name="Preco" column="EQUIPAMENTO_PRECO" type="double" length="20"/>
<property name="DataCompra" column="EQUIPAMENTO_DATA_COMPRA" type="datetime" length="20"/>
<property name="Quantidade" column="EQUIPAMENTO_QUANTIDADE" type="int" length="20"/>

<many-to-one
name="Area"
lazy="false"
column="AREA_COD"
class="Model.Area, Model"/>

</class>
</hibernate-mapping>

Area a = new Area();
gSessao.Load(a, asCodigoChavePrimaria);

The list of Equipamento in object a, its not fill!!!