Update data to viewpager dynamically

Question

I have and activity A where I am setting viewpager adapter. I have a fragment MyFragmentAdapter which extends FragmentStatePagerAdapter. In A activity I have static method where I am getting new value which I want to pass to MyFragmentAdapter. My problem is that it's not getting new value even when I am calling viewPager.getAdapter().notifyDataSetChanged();

A activity

viewPager = (ViewPager) childView.findViewById(R.id.contents_viewpager);
final TabLayout propertyTabsHeader = (TabLayout) childView.findViewById(R.id.title_strip);

MyFragmentAdapter PagerAdapter = new MyFragmentAdapter(tabList, getSupportFragmentManager(), data);
viewPager.setAdapter(PagerAdapter);

public static void updatePgaer(final Context mCon) {
   //here I get new data 
   viewPager.getAdapter().notifyDataSetChanged();         
}

MyFragmentAdapter

MyFragmentAdapter extends FragmentStatePagerAdapter{
    private MyFragmentAdapter(FragmentManager fm) {
        super(fm);
    }


    public MyFragmentAdapter(ArrayList<String> tabList, FragmentManager fm, String data) {
        super(fm);
        this.propertyTabs = tabList;
        this.data = data;   
    }

    @Override
    public Fragment getItem(int i) {
        Fragment fragment = new LeagueListFragements();
        Bundle bdl = new Bundle();
        bdl.putInt("location", i);
        bdl.putString("title", propertyTabs.get(i).toString());
        bdl.putSerializable("data", mydata);

        fragment.setArguments(bdl);
        listFrag.add(fragment);

        return listFrag.get(i);
    }
}

So when I call updatePgaer how can I get new data in MyFragmentAdapter.

i am not getting new data in fragment so that i can use interface for same .. i am getting new data in parent Activity