Thanks Vladimir. I have solved this problem.Now I am putting to you another two questin.
In a form Label1=acno ,label2=name.And have text1,text2 corresponding text. I want to automatically put Name in the Text2. In prg we use this type of code:

mno=0
@10,12 say "acno" get mno
read
use mbal
index on acno to mn
seek mno
if found()
@14,12 say name
endif

mbal.dbf has acno and name unique. How I can have same in a form?

Chandan