UMaterialExpressionFresnel* Fresnel = NULL;
Fresnel = Cast(CurrentMaterialEditor->CreateNewMaterialExpression(UMaterialExpressionFresnel::StaticClass(), FVector2D(FMath::FRandRange(-1000.0f, 1000.0f), FMath::FRandRange(-1000.0f, 1000.0f)), true, true));
Error 1 error LNK2019: unresolved external symbol “private: static class UClass * __cdecl UMaterialExpressionFresnel::GetPrivateStaticClass(wchar_t const *)” (?GetPrivateStaticClass@UMaterialExpressionFresnel@@CAPEAVUClass@@PEB_W@Z) referenced in function "class UMaterialExpressionFresnel * _cdecl Cast<class UMaterialExpressionFresnel,class UMaterialExpression>(class UMaterialExpression *)" (??$Cast@VUMaterialExpressionFresnel@@VUMaterialExpression@@@@YAPEAVUMaterialExpressionFresnel@@PEAVUMaterialExpression@@@Z) E:_workspace\UE4\PYC_Plugin_05\Intermediate\ProjectFiles\EditMaterial.cpp.obj PYC_Plugin_05