Selected Entity from dataTable is not handed over to Backing Bean

[janvandam]

Hello,

I am new to Seam and run into a problem. I have a working application with a page containing a dataTable:

<rich:dataTable id="outputFileList"
     var="_outputFile"
     value="#{outputFileList.resultList}"
     rendered="#{not empty outputFileList.resultList}">

Every line in the table has a link:

            <s:link action="#{outputFileAction.downloadOutputFile(_outputFile)}"
                     value="Download"
               propagation="none"
                        id="outputFileDownload"
                  rendered="#{empty from}">
            </s:link>
        </rich:column>
    </rich:dataTable>

Obviously I have a backing bean OutputFileAction with a method downloadOutputFile:

     public String downloadOutputFile(OutputFile outputFile) {
        setOutputFile(outputFile);

          String returnFlag = "IMATSuccessfull";
          logger.info("****** start output file download - filename = " + outputFile.getFilename());
          return returnFlag;
     }

The method is called indeed, however the parameter outputFile is null.

Why is that?

The class has a field:

     @In(create=true)
     OutputFileHome outputFileHome;

What is wrong or missing?
Thanks in advance for any suggestions.

[janvandam]

Problem solved. There was a <h:form></h:form> tag pair missing around the <rich:dataTable>