anchorScroll with ionic modal cant get it working , How?

How do you use $ionicScrollDelegate with anchorScroll in ionic modal, I am able to make it work with in angular App and also in ionic (without ionic modal),

In Angular:

working plunker with angular

   plnkr.co/edit/CQeaComH4xv2h2ckBudA?p=preview1

In ionic:

In this plunker i just tested with ionic modal and without ionic modal

when i start using same concept with ionic modal, i cant make it work. Is there anything i have to do to make it to work with ionic modal

plunker with ionic

plnkr.co/edit/ZN8pr20rUOB4QN17IwQh?p=preview

what i need is in my open start modal i need startView at 07:30 and in close model startView by 17:30,

(Note: these two functions are called in same controller in my application)

Any help much appreciated, thanks in advance.