Streaming videos with query string in URL

Hi there guys,

I’m new here and hope someone could help me, cause really I’m gonna crazy on this subject…

I have to play a video stream, so the typical command
BUT the videoURL must be something different, with a query/parameters like:

This call returns error of course, the NetStream.Play.StreamNotFound

So, the query string changes the way the resource is loaded? Is a bug of flash player? Is there some fake to fix/push this my need?

Thank you for your attention.