Error updating case variable REST API

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Hi,

I'm getting an error when I try to update a case variable using REST API. It works 50% of the time.

I get the following error:

SEVERE [ToolkitHttpServlet]
java.lang.IllegalArgumentException
        at java.nio.Buffer.position(Buffer.java:236)
        at org.apache.tomcat.util.buf.B2CConverter.convert(B2CConverter.java:84)
        at org.apache.catalina.connector.InputBuffer.realReadChars(InputBuffer.java:403)
        at org.apache.tomcat.util.buf.CharChunk.substract(CharChunk.java:416)
        at org.apache.catalina.connector.InputBuffer.read(InputBuffer.java:432)
        at org.apache.catalina.connector.CoyoteReader.read(CoyoteReader.java:105)
        at org.apache.catalina.connector.CoyoteReader.readLine(CoyoteReader.java:158)
        at org.bonitasoft.web.toolkit.server.ServletCall.getInputStream(ServletCall.java:139)
        at org.bonitasoft.web.rest.server.framework.APIServletCall.doPut(APIServletCall.java:191)
        at org.bonitasoft.web.toolkit.server.servlet.ToolkitHttpServlet.doPut(ToolkitHttpServlet.java:189)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:640)
        at org.bonitasoft.web.toolkit.server.servlet.ToolkitHttpServlet.service(ToolkitHttpServlet.java:71)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.bonitasoft.web.toolkit.server.servlet.ToolkitHttpServlet.service(ToolkitHttpServlet.java:222)
        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.FilterManager.pageRedirect(FilterManager.java:88)
        at org.bonitasoft.console.common.server.login.filter.FilterManager.doFilter(FilterManager.java:68)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
        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:235)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
        at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
        at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
        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:330)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
        at java.lang.Thread.run(Thread.java:722)

I'm updating by PUTing to:

bonita/API/bpm/caseVariable/<caseId>/<varId>

with payload like:

{'type': 'java.lang.String', 'id': '34002/state', 'value': u'0', 'name': 'state'}
http://documentation.bonitasoft.com/web-rest-api-examples#set_variables

What is happening? Why does it work 50% of the time? Why is Bonita so unstabble. BTW, I'm using JBoss bundle

No answers yet.
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