Printing a variable on the notify

Does anyone know how to print a variable into the notify?

I have the following code however when it prints on the screen it shows all zero.

DWORD* address = (DWORD*)0x820181b8;
char* buff = new char[256];
sprintf(buff, "address = 0x%x @0x%x", *address, address);
notify((WCHAR*)buff);