Atm its not possible with prebuild version of ue4. You need a self compiled engine version using the git sources. Maybe its also required that your project is c++ based.
here are some usefull wiki links:
if you need more help drop here a line 
Atm its not possible with prebuild version of ue4. You need a self compiled engine version using the git sources. Maybe its also required that your project is c++ based.
here are some usefull wiki links:
if you need more help drop here a line