Hello, a have a table TmpAjustCpe which references the table projet here is the mapping for this relation in the xml file projet.xml : <set name="tmpAjustCpes" inverse="true" > <key> <column name="PRJ_ID" precision="7" scale="0" not-null="true" /> </key> <one-to-many class="com.thales.project.TmpAjustCpe" /> </set> in the bean associated to projet , i wanna access a property of TmpAjustCpe for this i implemented this getter public BigDecimal getDernierCpeEmporte() { if(getProjet().getTmpAjustCpes()!=null){ for (Iterator<TmpAjustCpe> iterator = getProjet().getTmpAjustCpes().iterator(); iterator.hasNext();) { TmpAjustCpe tmpAjustCpe = (TmpAjustCpe) iterator.next(); return tmpAjustCpe.getDernierCpeEmporte(); } } return BigDecimal.ZERO; } the problem is that the data related to TmpAjustCpe have not been loaded any one have an idea what should i do in the xml file to load this property, Regards Elyes