ListBox in iPad: selecting multiple values

Hi,

When I create a ListBox using SAPUI5 for a WebApp (running it from my laptop) I can select multiple values from the ListBox by pressing the "CTRL" key of my keyboard.

The problem is when i run the application from the iPad: i cant press "CTRL" for selecting multiple values.

Is it possible to set the ListBox to select multiple values by simply clicking on them (without pressing CTRL).

Thanks!

Julian