how to remove plug-in when I used c++ to recompile code in sample and want to add some function on this plug-in?

Hi @liaotaofan​,

To remove the existing transformer plugin, you need to remove the function or factory .dll created by the compilation of the C++, usually kept in FME\\plugins, and the .fmx in FME\\transformers, which defines the transformer using that function or factory. Then you can replace them with the updated .dll and .fmx files.