create library and hidden symbol with steering file

Hi,all

I want to hide symbols as what i defined when i am creating a library on MDK5. Therefore, i
tried to use steering file and add "--edit file.ste" on the the linker misc control box(Project->Linker->misc controls). But that didn't work.

What's more, even if i tried to add some wrong options. There is no wrong message when create a library. Nothing changed at all.

so, What should i do when creating library and hidden symbol with steering file

Thanks advance and sorry for my poor english