Errors at an article in the Docs (Modular Characters)

Hello everyone.
I was following this article ( Working with Modular Characters | Unreal Engine Documentation ) and in the Mesh Merge Example I used the codes as they were described, but I got errors when compiling:

2>C:/Documents/Unreal Projects/Assets 4.21/Source/Assets/MeshMergeFunctionLibrary.h(18): error : Missing ‘<’ in ‘tarray’

Line 18 is:

   TArray SectionIDs;

As far as I know C++ the code doesn’t determined the type of the variables (SectionIDs is the first, but not the only one), and I don’t know them. Someone familiar with this procedure?

If you’re still looking for the answer to this, it was posted over on the Epic Japanese forums, a user went and fixed the missing code and added a zip file.

Still getting errors with this japanese solution, but I had already managed to get it working, thanks.