problem with this function.

Hello experts,

I am currently having a problem with the function below because of the language parameter. I tried using sy-langu and 'EN' but my program dumps. Below is my code guys. Any help would be appreciated. Thanks a lot!

CONCATENATE v_vbeln v_posnv

INTO ls_thead-tdname.

*function to read text related to item

REFRESH: lt_lines.

CALL FUNCTION 'READ_TEXT'

EXPORTING

id = '0002'

language = 'EN' -

> here is the problem

name = ls_thead-tdname

object = 'VBBP'

TABLES

lines = lt_lines

EXCEPTIONS

id = 1

language = 2

name = 3

not_found = 4.