I think I have seen the application: 05/00315/REM of 8th March on the old Handsworth First School?
Now the outline permission was applied for by the council back in 2003 and granted on 2nd June 2003. It would be important to find out what what was approved in that outline application.
If you still have time to object, then permission will not have been granted yet.
After the closing date for objections, a planning officer will prepare a report which will then go before the "City Centre & East" Planning Board for a decision.
You need to keep telephoning the planning department to find out which meeting will be presented with this application.
You can also keep monitoring the Agenda as posted in advance of the meetings on the council website here
You will also be able to read the officer's report in the agenda and learn whether they are recommending approval or not.
You may have good grounds for reducing the height based on the density of units, characteristics of the surrounding area, overlooking etc.
But it is very important to support your objection with attendance at the Board Meeting.
Once a member of the public has voiced their objection (refuting an officer's recommendation) from the floor, it is much easier for a member of the board (councillor) to recommend rejection/alteration.