DateInterval as a Property of App

I am trying to create a Public DateInterval Property called SchedulerInterval in App that will be available throughout my app. I get a nilobjectexception when I try to populate it in the App.Open Event

SchedulerInterval.Minutes=10

Is there someplace else I need to define my Minutes Value?

best practice says globals should be defined in a module

DateInterval is an object, so you’ll need to initialize it:

SchedulerInterval = new Xojo.Core.DateInterval(0,0,0,0,10,0)

Thanks! New it had to be something simple!