I got it working like you said.It is oersisting too before the gateway.
pasting the xml if anybody is interested.
<?xml version="1.0" encoding="UTF-8"?>
<definitions id="Definition"
targetNamespace="http://www.jboss.org/drools"
typeLanguage="http://www.java.com/javaTypes"
expressionLanguage="http://www.mvel.org/2.0"
xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.omg.org/spec/BPMN/20100524/MODEL BPMN20.xsd"
xmlns:g="http://www.jboss.org/drools/flow/gpd"
xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI"
xmlns:dc="http://www.omg.org/spec/DD/20100524/DC"
xmlns:di="http://www.omg.org/spec/DD/20100524/DI"
xmlns:tns="http://www.jboss.org/drools">
<itemDefinition id="_testItem" />
<process processType="Private" isExecutable="true" id="servicetask" name="Sample Process" tns:packageName="defaultPackage" >
<!-- process variables -->
<property id="test" itemSubjectRef="_testItem"/>
<!-- nodes -->
<startEvent id="_1" name="StartProcess" />
<intermediateCatchEvent id="_4" name="Signal" >
<dataOutput id="_4_Output" name="event" />
<dataOutputAssociation>
<sourceRef>_4_Output</sourceRef>
<targetRef>test</targetRef>
</dataOutputAssociation>
<outputSet>
<dataOutputRefs>_4_Output</dataOutputRefs>
</outputSet>
<signalEventDefinition signalRef="MyTest"/>
</intermediateCatchEvent>
<scriptTask id="_5" name="Script" scriptFormat="http://www.java.com/java" >
<script>System.out.println("after the signal"+test);</script>
</scriptTask>
<endEvent id="_6" name="End" >
<terminateEventDefinition/>
</endEvent>
<scriptTask id="_7" name="Script" scriptFormat="http://www.java.com/java" >
<script>System.out.println("I am before the signal");</script>
</scriptTask>
<parallelGateway id="_8" name="Gateway" gatewayDirection="Converging" />
<!-- connections -->
<sequenceFlow id="_8-_5" sourceRef="_8" targetRef="_5" />
<sequenceFlow id="_5-_6" sourceRef="_5" targetRef="_6" />
<sequenceFlow id="_1-_7" sourceRef="_1" targetRef="_7" />
<sequenceFlow id="_7-_8" sourceRef="_7" targetRef="_8" />
<sequenceFlow id="_4-_8" sourceRef="_4" targetRef="_8" />
</process>
<bpmndi:BPMNDiagram>
<bpmndi:BPMNPlane bpmnElement="servicetask" >
<bpmndi:BPMNShape bpmnElement="_1" >
<dc:Bounds x="46" y="74" width="48" height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_4" >
<dc:Bounds x="15" y="184" width="48" height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_5" >
<dc:Bounds x="202" y="277" width="80" height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_6" >
<dc:Bounds x="391" y="295" width="48" height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_7" >
<dc:Bounds x="200" y="68" width="80" height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="_8" >
<dc:Bounds x="379" y="106" width="48" height="48" />
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="_8-_5" >
<di:waypoint x="403" y="130" />
<di:waypoint x="242" y="301" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_5-_6" >
<di:waypoint x="242" y="301" />
<di:waypoint x="415" y="319" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_1-_7" >
<di:waypoint x="70" y="98" />
<di:waypoint x="240" y="92" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_7-_8" >
<di:waypoint x="240" y="92" />
<di:waypoint x="403" y="130" />
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="_4-_8" >
<di:waypoint x="39" y="208" />
<di:waypoint x="403" y="130" />
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>