Error in table widget

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Hello, I want to load a list into a table with data from a MySql connector. The output connector is an array of n rows and one column. The log when I run the task is as follows

04/06/2014 12:11:47 org.bonitasoft.connectors.database.jdbc.JdbcConnector setInputParameters INFO: username root 04/06/2014 12:11:47 org.bonitasoft.connectors.database.jdbc.JdbcConnector setInputParameters INFO: password ****** 04/06/2014 12:11:47 org.bonitasoft.connectors.database.jdbc.JdbcConnector setInputParameters INFO: script select pro_nombre from productos 04/06/2014 12:11:47 org.bonitasoft.connectors.database.jdbc.JdbcConnector setInputParameters INFO: separator null 04/06/2014 12:11:47 org.bonitasoft.connectors.database.jdbc.JdbcConnector setInputParameters INFO: driver com.mysql.jdbc.Driver 04/06/2014 12:11:47 org.bonitasoft.connectors.database.jdbc.JdbcConnector setInputParameters INFO: url jdbc:mysql://localhost:3306/cerdos 04/06/2014 12:11:47 org.bonitasoft.connectors.database.jdbc.JdbcConnector setInputParameters INFO: outputType n_row 04/06/2014 12:11:51 org.bonitasoft.forms.server.FormsServlet getFormFirstPage GRAVE: Error while getting the first page for application Proceso Cerdos--1.0--Enviar Stock$entry java.lang.IllegalArgumentException at org.bonitasoft.forms.server.api.impl.util.FormFieldValuesUtil.getAvailableValues(FormFieldValuesUtil.java:295) at org.bonitasoft.forms.server.api.impl.util.FormFieldValuesUtil.getTableAvailableValues(FormFieldValuesUtil.java:315) at org.bonitasoft.forms.server.api.impl.util.FormFieldValuesUtil.setFormWidgetAvailableValues(FormFieldValuesUtil.java:659) at org.bonitasoft.forms.server.api.impl.util.FormFieldValuesUtil.setFormWidgetValues(FormFieldValuesUtil.java:614) at org.bonitasoft.forms.server.api.impl.util.FormFieldValuesUtil.setFormWidgetsValues(FormFieldValuesUtil.java:886) at org.bonitasoft.forms.server.FormsServlet.getFormFirstPage(FormsServlet.java:234) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:561) at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208) at org.bonitasoft.forms.server.FormsServlet.processCall(FormsServlet.java:138) at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248) at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62) at javax.servlet.http.HttpServlet.service(HttpServlet.java:643) at javax.servlet.http.HttpServlet.service(HttpServlet.java:723) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.bonitasoft.console.common.server.login.filter.NoCacheFilter.doFilter(NoCacheFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) at org.bonitasoft.console.security.SessionFixationValve.invoke(SessionFixationValve.java:77) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Unknown Source)

Someone who can help me? I'm with some urgency

Thanks!!

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