Need iHelp for iRule

Here the example I use:

http://devcentral.f5.com/wiki/irule...epage.ashx

http://devcentral.f5.com/Community/...fault.aspx

When I force the need to be down by creating to monitor bad port which LTM to show to unknown state. LTM suppose to go Maintenance page but is showing blank screen.

I am new to LTM and I have tried to my best I can't figure out where the problem.

I appreciate in advance.

}

class maint_index_html_class {

"filename" { "/var/class/maint.index.html.class" }

}

}

rule Maintenancehtml {

when HTTP_REQUEST {

if {[active_members Pool_192.168.12.110.SN01138] < 1} {

HTTP::respond 200 content [lindex $::maint_index_html_class 0] "Content-Type" "image/png"

HTTP::respond 200 [class element -value 0 maint_index_html_class]

log local0. "Maintenance Page has been issued due to pool members not active"

}

}

}

[username@F5:Active] log more /var/class/maint.index.html.class

"key" :="Maintenance page

[username@F5:Active] log

Feb 24 07:08:50 local/tmm1 info tmm1[4996]: Rule Maintenancehtml : Maintenance Page has been issued due to pool members not active