cant copy NEW files only!

Hi,
I am logged in as web, as usual, and this time when i try to copy a NEW file onto the remote server (in html folder) it gives me this error->
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Cannot create remote file "/var/www/html/file".

Permission denied.
Error code: 3
Error message from server: Permission denied (*)
Request code: 3
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But i can replace existing files with out any error. And ya this is winSCP3.

Thank you for reading my problem. Hoping for some help.

You probably do not have write permissions to the directory, but you have (over-)write permission to the files in the directory. Please check this.