Dynamic shadows? Shadow map... Please help

Hola!

After meshing around with the MR Utility Kit sample, I really liked the "Shadow map" version of Oppy´s shadow. 

I have been trying to reproduce this shadow on my own project, copying every single blueprint and setting from the PTRL sample map (the map that showcases all interactions with light and shadows in VR) and .... I just cannot make it. 

Do you know guys how to implement a simple movable shadow in VR using this method?

Thanks a lot in advance