Edit box length size problem...at Detail Section.

hi.

Plz have a look on below image.

This is my problem.

in details section i put one edit box... like below..

the data is comming from data base..

but the size of the filed is more than the size of the Edit box..

i all ready checked  can grow option in format field common properties.

but horizontal line is not adjusting ....

what should i do...