Hi,approve/reject button not displaying instead it displays the task done button after the first approval.Please guide .My workflow XML
<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:activiti="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:omgdc="http://www.omg.org/spec/DD/20100524/DC" xmlns:omgdi="http://www.omg.org/spec/DD/20100524/DI" typeLanguage="http://www.w3.org/2001/XMLSchema" expressionLanguage="http://www.w3.org/1999/XPath" targetNamespace="http://alfresco.org">
<process id="customAPWorkflow" name="Activiti AP Workflow" isExecutable="true">
<startEvent id="start" activiti:formKey="wf:submitReviewTask"></startEvent>
<sequenceFlow id="flow1" sourceRef="start" targetRef="reviewTask"></sequenceFlow>
<userTask id="reviewTask" name="Review Task" activiti:assignee="${bpm_assignee.properties.userName}" activiti:formKey="wf:activitiReviewTask">
<extensionElements>
<activiti:taskListener event="create" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[if (typeof bpm_workflowDueDate != 'undefined') task.dueDate = bpm_workflowDueDate
if (typeof bpm_workflowPriority != 'undefined') task.priority = bpm_workflowPriority;]]></activiti:string>
</activiti:field>
</activiti:taskListener>
<activiti:taskListener event="complete" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[execution.setVariable('wf_reviewOutcome', task.getVariable('wf_reviewOutcome'));
if(bpm_package.children[0].properties['ap:invoiceamount'] <= 25000){
execution.setVariable('wf_approver', "GROUP_approver1");
}else{
execution.setVariable('wf_approver', "GROUP_approver2");
}]]></activiti:string>
</activiti:field>
</activiti:taskListener>
</extensionElements>
</userTask>
<sequenceFlow id="flow2" sourceRef="reviewTask" targetRef="reviewDecision"></sequenceFlow>
<exclusiveGateway id="reviewDecision" name="Review Decision"></exclusiveGateway>
<sequenceFlow id="flow3" sourceRef="reviewDecision" targetRef="approved">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${wf_reviewOutcome == 'Approve'}]]></conditionExpression>
</sequenceFlow>
<sequenceFlow id="flow4" sourceRef="reviewDecision" targetRef="rejected"></sequenceFlow>
<userTask id="approved" name="Clerk Approved" activiti:candidateGroups="${wf_approver}" activiti:formKey="wf:approvedTask">
<documentation>The document was reviewed and approved.</documentation>
<extensionElements>
<activiti:taskListener event="create" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[if (typeof bpm_workflowDueDate != 'undefined') task.dueDate = bpm_workflowDueDate
if (typeof bpm_workflowPriority != 'undefined') task.priority = bpm_workflowPriority;]]></activiti:string>
</activiti:field>
</activiti:taskListener>
</extensionElements>
</userTask>
<userTask id="rejected" name="Clerk Rejected" activiti:candidateGroups="GROUP_vendor" activiti:formKey="wf:rejectedTask">
<documentation>The document was reviewed and rejected.</documentation>
<extensionElements>
<activiti:taskListener event="create" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[if (typeof bpm_workflowDueDate != 'undefined') task.dueDate = bpm_workflowDueDate
if (typeof bpm_workflowPriority != 'undefined') task.priority = bpm_workflowPriority;]]></activiti:string>
</activiti:field>
</activiti:taskListener>
</extensionElements>
</userTask>
<endEvent id="end"></endEvent>
<sequenceFlow id="flow5" sourceRef="rejected" targetRef="vendorDecision"></sequenceFlow>
<sequenceFlow id="flow6" sourceRef="approved" targetRef="approverDecision"></sequenceFlow>
<sequenceFlow id="flow7" sourceRef="approverDecision" targetRef="approverapproved">
<conditionExpression xsi:type="tFormalExpression"><![CDATA[${wf_reviewOutcome == 'Approve'}]]></conditionExpression>
</sequenceFlow>
<userTask id="approverapproved" name="Approver Approved" activiti:formKey="wf:approvedTask">
<documentation>The document was reviewed and approved.</documentation>
<extensionElements>
<activiti:taskListener event="create" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[if (typeof bpm_workflowDueDate != 'undefined') task.dueDate = bpm_workflowDueDate
if (typeof bpm_workflowPriority != 'undefined') task.priority = bpm_workflowPriority;]]></activiti:string>
</activiti:field>
</activiti:taskListener>
</extensionElements>
</userTask>
<exclusiveGateway id="approverDecision" name="Approver Decision"></exclusiveGateway>
<sequenceFlow id="flow11" sourceRef="approverapproved" targetRef="end"></sequenceFlow>
<exclusiveGateway id="vendorDecision" name="Vendor Decision"></exclusiveGateway>
<userTask id="vendorreview" name="Vendor Review" activiti:formKey="wf:activitiReviewTask">
<extensionElements>
<activiti:taskListener event="create" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[if (typeof bpm_workflowDueDate != 'undefined') task.dueDate = bpm_workflowDueDate
if (typeof bpm_workflowPriority != 'undefined') task.priority = bpm_workflowPriority;]]></activiti:string>
</activiti:field>
</activiti:taskListener>
</extensionElements>
</userTask>
<sequenceFlow id="flow10" sourceRef="vendorDecision" targetRef="vendorreview"></sequenceFlow>
<sequenceFlow id="flow12" sourceRef="vendorreview" targetRef="reviewDecision"></sequenceFlow>
<userTask id="approverrejected" name="Approver Rejected" activiti:candidateGroups="GROUP_vendor" activiti:formKey="wf:rejectedTask">
<documentation>The document was reviewed and rejected.</documentation>
<extensionElements>
<activiti:taskListener event="create" class="org.alfresco.repo.workflow.activiti.tasklistener.ScriptTaskListener">
<activiti:field name="script">
<activiti:string><![CDATA[if (typeof bpm_workflowDueDate != 'undefined') task.dueDate = bpm_workflowDueDate
if (typeof bpm_workflowPriority != 'undefined') task.priority = bpm_workflowPriority;]]></activiti:string>
</activiti:field>
</activiti:taskListener>
</extensionElements>
</userTask>
<sequenceFlow id="flow13" sourceRef="approverDecision" targetRef="approverrejected"></sequenceFlow>
<sequenceFlow id="flow14" sourceRef="approverrejected" targetRef="vendorDecision"></sequenceFlow>
</process>
<bpmndi:BPMNDiagram id="BPMNDiagram_customAPWorkflow">
<bpmndi:BPMNPlane bpmnElement="customAPWorkflow" id="BPMNPlane_customAPWorkflow">
<bpmndi:BPMNShape bpmnElement="start" id="BPMNShape_start">
<omgdc:Bounds height="35.0" width="35.0" x="30.0" y="200.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="reviewTask" id="BPMNShape_reviewTask">
<omgdc:Bounds height="55.0" width="105.0" x="125.0" y="190.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="reviewDecision" id="BPMNShape_reviewDecision">
<omgdc:Bounds height="40.0" width="40.0" x="290.0" y="197.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="approved" id="BPMNShape_approved">
<omgdc:Bounds height="55.0" width="105.0" x="390.0" y="97.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="rejected" id="BPMNShape_rejected">
<omgdc:Bounds height="55.0" width="105.0" x="390.0" y="297.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="end" id="BPMNShape_end">
<omgdc:Bounds height="35.0" width="35.0" x="760.0" y="30.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="approverapproved" id="BPMNShape_approverapproved">
<omgdc:Bounds height="55.0" width="105.0" x="555.0" y="20.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="approverDecision" id="BPMNShape_approverDecision">
<omgdc:Bounds height="40.0" width="40.0" x="587.0" y="104.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="vendorDecision" id="BPMNShape_vendorDecision">
<omgdc:Bounds height="40.0" width="40.0" x="587.0" y="304.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="vendorreview" id="BPMNShape_vendorreview">
<omgdc:Bounds height="55.0" width="105.0" x="555.0" y="430.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNShape bpmnElement="approverrejected" id="BPMNShape_approverrejected">
<omgdc:Bounds height="55.0" width="105.0" x="555.0" y="169.0"></omgdc:Bounds>
</bpmndi:BPMNShape>
<bpmndi:BPMNEdge bpmnElement="flow1" id="BPMNEdge_flow1">
<omgdi:waypoint x="65.0" y="217.0"></omgdi:waypoint>
<omgdi:waypoint x="125.0" y="217.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow2" id="BPMNEdge_flow2">
<omgdi:waypoint x="230.0" y="217.0"></omgdi:waypoint>
<omgdi:waypoint x="290.0" y="217.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow3" id="BPMNEdge_flow3">
<omgdi:waypoint x="310.0" y="197.0"></omgdi:waypoint>
<omgdi:waypoint x="310.0" y="124.0"></omgdi:waypoint>
<omgdi:waypoint x="390.0" y="124.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow4" id="BPMNEdge_flow4">
<omgdi:waypoint x="310.0" y="237.0"></omgdi:waypoint>
<omgdi:waypoint x="310.0" y="324.0"></omgdi:waypoint>
<omgdi:waypoint x="390.0" y="324.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow5" id="BPMNEdge_flow5">
<omgdi:waypoint x="495.0" y="324.0"></omgdi:waypoint>
<omgdi:waypoint x="587.0" y="324.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow6" id="BPMNEdge_flow6">
<omgdi:waypoint x="495.0" y="124.0"></omgdi:waypoint>
<omgdi:waypoint x="587.0" y="124.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow7" id="BPMNEdge_flow7">
<omgdi:waypoint x="607.0" y="104.0"></omgdi:waypoint>
<omgdi:waypoint x="607.0" y="75.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow11" id="BPMNEdge_flow11">
<omgdi:waypoint x="660.0" y="47.0"></omgdi:waypoint>
<omgdi:waypoint x="737.0" y="47.0"></omgdi:waypoint>
<omgdi:waypoint x="760.0" y="47.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow10" id="BPMNEdge_flow10">
<omgdi:waypoint x="607.0" y="344.0"></omgdi:waypoint>
<omgdi:waypoint x="607.0" y="430.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow12" id="BPMNEdge_flow12">
<omgdi:waypoint x="555.0" y="457.0"></omgdi:waypoint>
<omgdi:waypoint x="310.0" y="457.0"></omgdi:waypoint>
<omgdi:waypoint x="310.0" y="237.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow13" id="BPMNEdge_flow13">
<omgdi:waypoint x="607.0" y="144.0"></omgdi:waypoint>
<omgdi:waypoint x="607.0" y="169.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
<bpmndi:BPMNEdge bpmnElement="flow14" id="BPMNEdge_flow14">
<omgdi:waypoint x="607.0" y="224.0"></omgdi:waypoint>
<omgdi:waypoint x="607.0" y="304.0"></omgdi:waypoint>
</bpmndi:BPMNEdge>
</bpmndi:BPMNPlane>
</bpmndi:BPMNDiagram>
</definitions>