Hi,
I'm trying to configure a 'launchApp' method on a button in custom property page as follows:

Nothing happens after the button is pressed.
D2 Admin guide tells to enable canUseAdminInLaunchApp parameter in D2-Client.properties: since that file is no more present in D" 4.5, I've tried to add the parameter in DFS.properties, is it correct?
Is that action type still supported in D2 4.5?
Are there other ways to launch a client exe? I need to execute a program on the client to acquire an image through a signature device.
Thank you,
Andrea