Thanks for the answer securix.
Let me try to be a little more specific.
My script does like LOTS of lines. And I want only a FEW to be msg to my channel.
[13:48:43] [vrf:::>] 500- complete calculation took 50ms.
The line above is copied from my @window.
I want my @window to msg the text after the "500-" to my #channel, how do I do this?