I have another problem with a fork :it goes through only 1 of it branch and act like the others simply don't exist ( pass through the following join ).
<?xml version="1.0" encoding="UTF-8"?>
<process name="arriveDepart" xmlns="http://jbpm.org/4.4/jpdl">
<swimlane candidate-users="${login}" name="Manager"/>
<swimlane candidate-users="mary" name="Logistique"/>
<swimlane candidate-users="mary" name="SI-DRI"/>
<swimlane candidate-users="mary" name="DSEM"/>
<swimlane candidate-users="mary" name="I-net"/>
<start form="org/laposte/jbpm/start.html" g="322,16,48,52" name="start1">
<transition g="-68,-18" name="to exclusive1" to="exclusive1"/>
</start>
<task form="org/laposte/jbpm/SaisieidRH.html" g="228,184,92,52" name="Saisie idRH" swimlane="Logistique">
<transition to="fork1"/>
</task>
<fork g="322,348,48,52" name="fork1">
<transition to="Saisie badge"/>
<transition to="Installation poste"/>
<transition to="Activation i-net"/>
</fork>
<task form="org/laposte/jbpm/Saisiebadge.html" g="176,432,92,52" name="Saisie badge" swimlane="Logistique">
<transition to="join1"/>
</task>
<task form="org/laposte/jbpm/Installationposte.html" g="300,432,92,52" name="Installation poste" swimlane="DSEM">
<transition to="join1"/>
</task>
<task form="org/laposte/jbpm/activationI-net.html" g="424,432,92,52" name="Activation i-net" swimlane="I-net">
<transition to="Creation AD"/>
</task>
<task form="org/laposte/jbpm/creationAD.html" g="424,516,92,52" name="Creation AD" swimlane="DSEM">
<transition to="exclusive3"/>
</task>
<decision g="424,600,92,52" name="exclusive3">
<transition g="-120,-18" name="to Decision prolongation" to="join1">
<condition expr="#{psnext!="true"}"/>
</transition>
<transition to="Liaison PSNEXT">
<condition expr="#{psnext=="true"}"/>
</transition>
</decision>
<task form="org/laposte/jbpm/Liaisonpsnext.html" g="480,699,92,52" name="Liaison PSNEXT" swimlane="SI-DRI">
<transition g="-120,-18" name="to Decision prolongation" to="join1"/>
</task>
<join g="279,848,92,52" multiplicity="3" name="join1">
<transition to="Decision prolongation"/>
</join>
<task form="org/laposte/jbpm/decisionprolongation.html" g="279,932,92,52" name="Decision prolongation" swimlane="Manager">
<transition to="exclusive2"/>
</task>
<decision g="140,1314,92,52" name="exclusive5">
<transition to="Document PSNEXT">
<condition expr="#{psnext=="true"}"/>
</transition>
<transition g="-41,-18" name="to join4" to="join4">
<condition expr="#{psnext!="true"}"/>
</transition>
</decision>
<fork g="162,1096,92,52" name="fork2">
<transition to="exclusive5"/>
<transition to="Prolongation badge"/>
</fork>
<task form="org/laposte/jbpm/documentpsnext.html" g="27,1237,92,52" name="Document PSNEXT" swimlane="Manager">
<transition to="Prolongation PSNEXT"/>
</task>
<task form="org/laposte/jbpm/prolongationpsnext.html" g="-2,1157,92,52" name="Prolongation PSNEXT" swimlane="SI-DRI">
<transition g="-41,-18" name="to join4" to="join4"/>
</task>
<task form="org/laposte/jbpm/prolongationbadge.html" g="113,1040,92,52" name="Prolongation badge" swimlane="Logistique">
<transition to="join4"/>
</task>
<join g="410,1096,92,52" name="fork3">
<transition to="Suppression AD"/>
<transition to="Editions documents"/>
<transition to="Reprise badge"/>
<transition to="Enlevement poste"/>
</join>
<task form="org/laposte/jbpm/suppressionAD.html" g="435,1185,92,52" name="Suppression AD" swimlane="DSEM">
<transition to="join3"/>
</task>
<task form="org/laposte/jbpm/default.html" g="283,1203,92,52" name="Editions documents" swimlane="Manager">
<transition to="Suppression services i-net"/>
<transition to="exclusive7"/>
</task>
<task form="org/laposte/jbpm/reprisebadge.html" g="534,1180,92,52" name="Reprise badge" swimlane="Logistique">
<transition to="join3"/>
</task>
<task form="org/laposte/jbpm/suppressionpsnext.html" g="294,1417,92,52" name="Suppression PSNEXT" swimlane="SI-DRI">
<transition to="join3"/>
</task>
<decision g="308,1285,92,52" name="exclusive7">
<transition to="Suppression PSNEXT">
<condition expr="#{psnext=="true"}"/>
</transition>
<transition to="join3">
<condition expr="#{psnext!="true"}"/>
</transition>
</decision>
<task form="org/laposte/jbpm/desactivationI-net.html" g="381,1274,92,52" name="Suppression services i-net" swimlane="I-net">
<transition to="join3"/>
</task>
<task form="org/laposte/jbpm/enlevementposte.html" g="658,1180,92,52" name="Enlevement poste" swimlane="DSEM">
<transition to="join3"/>
</task>
<join g="488,1491,48,52" multiplicity="5" name="join3">
<transition to="end1"/>
</join>
<end g="505,1596,48,52" name="end1"/>
<join g="60,967,92,52" multiplicity="2" name="join4">
<transition g="-120,-18" name="to Decision prolongation" to="Decision prolongation"/>
</join>
<decision g="301,1016,48,48" name="exclusive2">
<transition to="fork2">
<condition expr="#{prolongation=="true"}"/>
</transition>
<transition to="fork3"><condition expr="#{prolongation!="true"}"/></transition>
</decision>
<decision g="333,121,48,48" name="exclusive1">
<transition to="Saisie idRH">
<condition expr="#{idrh==""}"/>
</transition>
<transition to="fork1">
<condition expr="#{idrh!=""}"/>
</transition>
</decision>
</process>
the problem comes from join3 / fork3.