public String getTP(String s)
{
  ctx = getContext();
  con = ctx.con;
  Date now = new Date();
  ctm = new ContractTariffManager( con );
  cm= new ContractManager(con);
  TariffPlanManager tpm = new TariffPlanManager(con);
  contract=cm.getContractByTitle(s);
  date = new GregorianCalendar();
  currentTariff = ctm.getContractTariff(contract.getId(), date );
  tpid = currentTariff.getTariffPlanId();
  tarif_title = tpm.getTariffPlan(tpid).getTitle();
  con.close();
  return  tarif_title;
}

    <xsl:value-of select="script:invoke('print','getTP',$title)"/>

Connector Java
        at ru.bitel.bgbilling.server.util.DefaultServerSetup$1.borrowObject(DefaultServerSetup.java:1)
        at ru.bitel.bgbilling.server.util.DatabaseConnectionPool$1.getConnection(DatabaseConnectionPool.java:30)
        at ru.bitel.bgbilling.server.util.DefaultServerSetup.getDBConnectionFromPool(DefaultServerSetup.java:572)
        at ru.bitel.bgbilling.kernel.contract.balance.server.BalanceServiceImpl.getData(BalanceServiceImpl.java:288)
        at ru.bitel.bgbilling.kernel.contract.balance.server.BalanceServiceImpl.getDataSource(BalanceServiceImpl.java:237)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at ru.bitel.bgbilling.kernel.container.service.server.ServiceInfo.invoke(ServiceInfo.java:101)
        at ru.bitel.bgbilling.kernel.container.ws.server.AbstractJaxWsHandler.invoke0(AbstractJaxWsHandler.java:195)
        at ru.bitel.bgbilling.kernel.container.ws.server.AbstractJaxWsHandler.access$0(AbstractJaxWsHandler.java:169)
        at ru.bitel.bgbilling.kernel.container.ws.server.AbstractJaxWsHandler$1.run(AbstractJaxWsHandler.java:242)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at ru.bitel.bgbilling.kernel.container.ws.server.AbstractJaxWsHandler.invoke(AbstractJaxWsHandler.java:236)
        at ru.bitel.bgbilling.kernel.container.ws.server.JaxWsHandler.invoke(JaxWsHandler.java:315)
        at ru.bitel.bgbilling.kernel.container.ws.server.AbstractJaxWsHandler$ServiceInstanceResolver$1.invoke(AbstractJaxWsHandler.java:335)
        at com.sun.xml.ws.server.InvokerTube$2.invoke(InvokerTube.java:150)
        at com.sun.xml.ws.server.sei.EndpointMethodHandler.invoke(EndpointMethodHandler.java:261)
        at com.sun.xml.ws.server.sei.SEIInvokerTube.processRequest(SEIInvokerTube.java:100)
        at com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:641)
        at com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:600)
        at com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:585)
        at com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:482)
        at com.sun.xml.ws.server.WSEndpointImpl$2.process(WSEndpointImpl.java:314)
        at com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:608)
        at com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:259)
        at com.sun.xml.ws.transport.http.servlet.ServletAdapter.handle(ServletAdapter.java:162)
        at ru.bitel.bgbilling.kernel.container.ws.server.JaxWSAdapter.handle(JaxWSAdapter.java:288)
        at bitel.billing.server.Executer.doPost(Unknown Source)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:745)