I'm trying to get a list of categories wrapped over multiple columns whith the attribute.

My code is like this:

			

			

			"http://www.w3.org/TR/html4/strict.dtd">
			

			<%@taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
			

			<%@taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
			

			<%@ taglib uri="http://myfaces.apache.org/tomahawk" prefix="t"%>
			

			

			

			

			

			content="text/html; charset=iso-8859-1">
			

			

			

			media="screen">
			

			

			

			

			

			

				

				Vennligst velg kategori:
				

			
			

			

			var="rader" binding="#{tabnavigering.categoryTable}">
			

			

			 
			

			

			

			

			

			

			

			

			

			

			

			

		

I know that my bean works properly because I'm able to output the list in one column.
When I try to open this page in my browser, I get the following error:

			

			javax.servlet.ServletException: org.apache.jasper.JasperException: /innhold/kategoriliste.jsp(21,4) Unable to find setter method for attribute: newspaperColumns
			

			javax.faces.webapp.FacesServlet.service(FacesServlet.java:152)
			

		

How do I solve this problem? I've googled for an answer, but all I find is that I have to rewrite the setter method, but I dont know where to find the setter method in the first place.

Please help me!