Why do i get linker errors with URig methods?

Development Character & Animation
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1

Hey all,

I am trying to use two methods from the URig class:

#include "Runtime/Engine/Classes/Animation/Rig.h"
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URig* SpiderRig = SpiderSkeleton->GetRig();
const FNode *rLegFront6Node = SpiderRig->GetNode(SpiderRig->FindNode(FName("rLegFront6")));

The compiler is ok with that, but not the linker, i get two error LNK2019 (unresolved extern symbol) for GetNode and FindNode.

The api doc says URig belongs to the Engine module, so why is the code not found ?

Should i add something in my build file ?

Thanks

Cedric