Problem with Table control lines

Question

Hi Friends,
This is the problem with table control lines:
I have screen with table control and I would like change the table control lines dynamicaly.
Exp:
In my PBO the Internal table which I am using to loop the TC is havig 7 records and its displayed with 7 records, now I have added one more record into my ITAB and now ITAB is having 8 records, when I am looping this ITAB with TC its taking the TC lines 7 only.
here is the code:
Initial values in gt_scr400 = 8
Initial values in tc_scr400 = 8
Now added one more recor into gt_scr400 , now gt_scr400  = 9.
  LOOP AT   gt_scr400
       INTO wa_scr400
       WITH CONTROL tc_scr400
       CURSOR tc_scr400-current_line.
  ENDLOOP.
I have used this logic :
  DESCRIBE TABLE gt_scr400 LINES g_rec_300 .
  tc_scr300-lines = g_rec_300.
but its not modifying the lines in my table control.
How to change the TC lines based on ITAB total records.
Thanks,
Sridhar

Answer 1

there is a field in TableViewName-xxx
don't remember the exact field name for (total no of records)
you can check it in debug.  when you add records in Internal table, u need to modify this field which is set at the first time when table control is populated.