How to run 'chmod -r' command dor sub directories?

I have tried to run a recursive chmod but actually it did not work to sub directories under Installer.

i.e

winscp.StandardInput.WriteLine("chmod -R 777 /home/Installers/*.*");
[ Not work to /home/Installers/Internal ]

Did I write the command OK?

There's no -R switch to chmod. WinSCP chmod is recursive implicitly. Remove the switch.
If this does not help, please post a log file.