[Serusers] Change INVITE and Replace

[Benito Caracuel]

Hello all,
 
I need help about this:
 
When an INVITE packet is received by SER, a Perl script changes the SDP of this INVITE and the result of this script (new INVITE with new SDP)  is saved in a txt file.
 
My question is:
 
How can I do that SER sends the new INVITE, which is in a txt file.
 
I have tried to do this with REPLACE command but I think is not possible because It doesn`t accept "regular expression" as substitute and I don´t know how save this new SDP in variables which can be process by SER.
 
Please help me.
 
Thank you very much.
 
 
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