How can I change ViewCell height?

I have ViewCell in TableView, I need to put two buttons there:

                <ViewCell Height="100">
                    <StackLayout Margin="10,0">
                        <Button Text="Button 1" />
                        <Button Text="Button 2" />
                    </StackLayout>
                </ViewCell>

Height don't work. How can I change ViewCell's height?