GetPublishedParamNames function return garbled code when the param name is Chinese or other unicode character

sorry there is not enough context here to debug your problem. Here is how to place good support requests

https://support.safe.com/hc/en-us/articles/25407438078349-How-to-Create-a-Great-FME-Form-Support-Case 

there is an attachment icon on these windows

FME Workspace file: test.zip, we created a published parameter named “测试”.

#include <isession.h>
#include <iworkspacerunner.h>
int main()
{
    IFMESession* session;
    FME_MsgNum err = FME_createSession(session);
    if (err)
    {
        return 0;
    }
    err = session->init(NULL);

    IFMEWorkspaceRunner* runner = session->createWorkspaceRunner();
    IFMEStringArray* array = session->createStringArray();
    IFMEString* str = session->createString();

    *str = "test.fmw";
    runner->getPublishedParamNames(*str, *array);

    for (size_t i = 0; i < array->entries(); i++)
    {
        std::string item = (*array)(i);
        printf("%s\n", item.c_str());
    }
    session->destroyString(str);
    session->destroyStringArray(array);
}

After resolving the workspace file, the parameter’s name will be “????”.

yeap thats what I suggested in first response