Did you try without c:out? IIRC out call shoul be useless. Maurizio Cucchiara
Il giorno 30/ago/2011 21.52, "JOSE L MARTINEZ-AVIAL" <jlm...@gmail.com> ha scritto: Hi, I'm using Struts 2.1.8, with plugin struts2-json-plugin-2.1.8.1.jar in an application deployed on WebLogic 10.3 ovver RedHat. We've been using the tag json:serialize without issue for months. But today we installed the same version of WebLogic over Windowx 7, and every time that tag is used, we got that error: Function 'json:serialize' specifies 5 params, but 1 were declared The tag is used as follows: var boxContent = <c:out value="${json:serialize(myDataStore)}" escapeXml='false'/>; It is the same war we deployed (and it works) on our RedHat environment, so I don't understand why is giving such error message. Any ideas? Thanks JL