Can Comodo Online AV Scanner Scan thru proxy server

I try Comodo Online Scanner for several time but fail.
I go thru company’s proxy server for this sevice.
When downloading the signature file, I can not see any progress from the the Active X downloan screen.
Therefore, the scanning process can not start.

So, I wish Comodo On Line scanner can allow the scanning service thru proxy server. :THNK