You are attempting to forward to PSTN, you can't do that using Voxalot (not yet). You can only forward to a SIP URI.
For caller ID, you must know the format the telco uses to send the number. In Mexico, the country code is never part of the caller ID. Normally ten digits are sent, although in some cases it seems a local number stripped of city code is sent, so you may get 8 or 7 digits as well.
If you don't know the part after the @ (most likely if coming from PSTN), use @.* which matches anything.
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