How to Enable dynamic CSM shadow for stationary directional light on mobile

Hello
The 4.12 release have annouced that, UE4 now support CSM shadow on mobile device now. I tried it with a simple example project, but unfortunately I can’t saw the shadow in the android preview mode(ES2). Could any one give a tip, about how to use that feature?

old xia, try this “How To” guide and report back on whether this solved your issue. Use Cascaded Shadows | Unreal Engine Documentation