Binding listview row height

Hi!
I want to bind the row height of a list view, so i can dynamically change it. Is it possible?

So far i've created a bindable property:

public static BindableProperty RowHeightProperty =
        BindableProperty.Create<LanguageCell, double> (
            b => b.Height,
            0
        );


    public double RowHeight {
        get {
            return (double)GetValue (RowHeightProperty);
        }
        set {
            SetValue (RowHeightProperty, value);
        }
    }

    this.SetBinding (LanguageCell.RowHeightProperty, "RowHeight");

I have that code inside a ViewCell (Called LanguageCell) but when I do RowHeight = 40 it does nothing... What i'm I missing?

Thanks!