Well, I'll try to guess at the question anyway!
Your solicitor needs to review the evidence very carefully to see whether it's worth trying to persuade the CPS to drop the charge to ABH. To see the difference between the two levels of injury, read paragraphs 46 and 55 here.
http://www.cps.gov.uk...s_against_the_person/
If you're convicted of the offence, the judge will have to refer to this document:
http://sentencingcoun...person_accessible.pdf
See the table on page 15 for GBH, or page 17 for ABH.
The sentences there refer to a first-time offender convicted after a trial. An early guilty plea can see the sentences reduced (by one third for custodial sentences) but previous convictions, particularly for violence, can see higher sentences imposed.
Chris