Issue with "modify ltm virtual-address" in iApp template

Hi Jeff, I'm guessing your virtual address is actually in /Common (when a virtual server is created by an iApp, the corresponding virtual address object is not linked to that iApp because it could be shared by many deployments), yet unless you specify that literally the iApp will try to look for it in its own folder. Try stripping out the app service name from the virtual address:

set confaddr [string map { /${tmsh::app_name}.app/ / } $::conf__addr]

iapp::conf modify ltm virtual-address $confaddr icmp-echo selective