Can you show me an example about %=navop%

Hi all,
On the <jbo:RowsetNavigate I found this:
Tip: You can also set the action parameter at runtime by using an expression such as
<%=navop%>. You would pass the action value to the RowsetNavigate tag from another portion of your page.
I guess this is used in conjunction with <jbo:OnEvent list=first,next, ..... > in order to not repeating code and reuse the same portion of code in navigating actions.
Can you show me how can I get the value <%=navop %> in order to pass it to the tags (i.e. <jbo:ROW action=<%=navop%>), in the submiting form?
Thanks.

this is just a local variable to the JSP page you can pass it as a request parameter and retrieve it as follows:
<%
String navop = request.getParameter("navigation"); // this is your variable name
%>

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