the problem with my dll itself, is that the function is not reconized by DBP.
i tryed to download the source examples from the topic i sad above, but they are broken, dead, it gives a error " arquive not found in server"
The Steps i followed to create the DLL:
VB .NET -> New Class Library Project
Created the Namespace, the Class and a simple add Function as method.
Then in C++ -> New Class Library Project, #using bla bla, then created the string table, but for some reason it inst working, puted both in plugin folder in dbp install dir.