What is the correct way to write this in GSP?

I'm Using Grails 1.2.1, Groovy 1.7.7. For this line of code in a GSP ...

<g:if test="${not empty sessionScope.adminUser}"> 

I'm getting this error,

2011-03-21 09:15:38,960 [http-8080-5] ERROR StackTrace  - Sanitizing stacktrace:  
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed, Users_davea_Documents_workspace_sts_2_6_0_SR1_socialmediaproxy_grails_app_views_index_gsp: 34: expecting ')', found 'empty' @ line 34, column 17.  
1 error

What is the correct syntax I should be u开发者_StackOverflow社区sing in my GSP file? THanks, - Dave

This should work < g:if test="${sessionScope.adminUser}">

Try !empty or simply ${sessionScope.adminUser}