I try to install my application in "Program Files" folder, but in main programm I have the following code:

programm_path = SYS(16,1)
programm_path = LEFT(programm_path,AT(MYAPP,programm_path)-1)

m_file = programm_path + "MyLib.FLL"
SET LIBRARY TO &m_file

but allways when I run application I receive the error messages: programm xxx.prg does not exist where the xxx is function from MyLib.Fll

How can I use the long file names within the VFP.

TIA
Boris