Did anyone please tell me how to move spline mesh?

Here’s deal,
I want to know how to move spline mesh little bit downwards when player step on it and after that it much be its previous positions for detail please see

Please answers in step by step
Or tell if UE4 isn’t compatible to do so…

Well I don’t know how to do that exactli but I think this may help . A similar example of what can be done.