Hi, I am trying to run this EL Lambda expression in a JSP on Tomcat 8_0_15
${(incr = x->x+1; incr(10)} But I get this exception org.apache.jasper.JasperException: /TestLambda.jsp (line: 44, column: 42) The function incr must be used with a prefix when a default namespace is not specified org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:42) Thanks and help will be appreciated to resolve this.