Use “Check Point” FTP Proxy Authentication Format in WinSCP/SmartFTP

Can I use "Check Point" FTP Proxy Authentication format in WinSCP or SmartFTP? Basically it's the format like below:

USER %u@%s@%h
PASS %p@%w

This format is supported in FileZilla. But I need some feature not inside FileZilla, so I have to work with WinSCP or SmartFTP.

Any thought would be greatly appreciated.

Thanks!

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