Hello Pavan,
Follow Venkat's instructions, except where he has the syntax:
"ls_toolbar-function = 'SEARCH'" change to "ls_toolbar-function = 'CTRL+F'".
This will set E-UCOMM to 'CTRL+F'.
Also, you can add: ls_toolbar-quickinfo = 'Search (CTRL+F)'. This will let the user know the control key command.
Regards,
Kim