bounce up android scrollableview

var scrollView = Ti.UI.createScrollableView({
        showVerticalScrollIndicator:false,
        verticalBounce:false,
    });
 
scrollView.addView(primeraPantalla);
    scrollView.addView(segundaPantalla.win_Form);
    scrollView.addView(terceraPantalla.win_Form);
    scrollView.addView(cuartaPantalla.win_Form);
    scrollView.addView(quintaPantalla.winForm);
    scrollView.addView(sextaPantalla.winForm);
    scrollView.addView(septimaPantalla.winForm);
    scrollView.addView(octavaPantalla.winForm);
    scrollView.addView(novenaPantalla.winForm);
    scrollView.addView(decimaPantalla.winForm);
    scrollView.addView(onceavaPantalla.winForm);
    scrollView.addView(doceavaPantalla.winForm);
    scrollView.addView(treceavaPantalla.winForm);
    scrollView.addView(catorceavaPantalla.winForm);
    scrollView.addView(quinceavaPantalla.winForm);

I have a scrollable view scrollview with more than 10 children. when I go from one screen to another, each scrollview scrolls to top how avoid that action?