Read a particular line of the prgram/FM while searching with a string

Hi Experts,

I have to read a line if a particular string is used in that particular line in a program/FM. For Eg: I have a string 'EKKO' , I have to search this string in a program zekko_update. The result what i need to get is 'MODIFY EKKO from Table ABC', which is the 45th line of the program.This is actually to create a where used list kind of program.

Expecting good suggestios.

Thanks,

FAAR.