Converting mouse controls to touch control tutorial

Hello everyone !
I’ve found this great set of tutorial for unreal : project-shasta - YouTube , and i am interested in especially this one : - YouTube
Though my idea is to convert this to touch controls, and here where i am having troubles. I do not have coursor position to get (- YouTube) so i tried to replace that with different things to break hit result and get coordinates for linetrace, but still no luck.
Can someone please help me with that ? Final idea is to pick object with touch, disable its physics, change couple of variables and move it while touching. Upon release touch it will stay on it’s place without physics applied.
Thanks in advance !

That guy is even giving project for this tutorial : - Google Drive !