Can this be used in COM applications?

[StarSoftwareBuilder]

I wanted to use the DLL for a VB6 application. Before compiling the "Register for COM interop" should be set to true. But I get errors trying to compile in VS2013 which I couldn't fix, but the build.cmd works. I have never tried to use a C# DLL in VB6 before, as the API is not documented hence I need some help with the API's that can be used!