How i install apex and physx sdk on unreal engine4

Development Character & Animation
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1

HELLO TO EVERY ONE.i make hair in 3dmax and hairwork and i want export that to ue4.there is not apx file format in import files.i download apex and physx how i install that

2

APEX assets can be either *.apb or *.apx format. more info here: APEX | Unreal Engine Documentation