How to set scheduled task?

Before this I asked a question. My service conifg is :

<proxy xmlns="http://ws.apache.org/ns/synapse" name="UnpayBilling_Task" transports="https,http" statistics="disable" trace="disable" startOnLoad="true">
    <target>
       <inSequence>
          <class name="com.coship.mediator.UnpayBillingMediator"></class>
          <log level="full" />
       </inSequence>
       <outSequence>
          <log level="full" />
          <send />
       </outSequence>
       <endpoint>
          <address uri="http://172.21.13.153:18080/aaa/services/receiveMsg" />
       </endpoint>
    </target>
 </proxy>
 

I write a extension mediator UnpayBillingMediator deal files. The class returns file name and send request to service http://172.21.13.153:18080/aaa/services/receiveMsg. The service no input message. I want service running every day at 13:30. I tried add New Scheduled Task.
soapAction:urn:mediate,to:http://localhost:8280/services/UnpayBilling?wsdl, Cron: 30 13 * * *. But it can not work? Anyone can tell me how to set this Scheduled Task?

SimpleQuartz Server name not in pinned servers list. Not starting Task
 

I also do not know how to set "pinned servers".

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