problem in user exit for text

hi all

m using EXIT_SAPLRSAP_003 to enhance one field in 0material_text field is LVORM

INCLUDE ZXRSAU03 .

CASE I_CHABASNM .

WHEN '0MATERIAL_TEXT' .

git_mara_data[] = c_t_texts[].

SELECT matnr lvorm " table initial check not required

FROM mara

INTO TABLE git_mara

FOR ALL ENTRIES IN git_mara_data

WHERE matnr = git_mara_data-matnr .

LOOP AT c_t_texts INTO gs_mara_data .

READ TABLE git_mara "sy-subrc check not required

INTO gs_mara

WITH KEY matnr = gs_mara_data-matnr .

MOVE gs_mara-lvorm TO gs_mara_data-zzlvorm .

MODIFY c_t_texts FROM gs_mara .

ENDLOOP .

ENDCASE .

but the problem is wen i m running RSA# in debugg mode this include is not called i put break point still its not stopping dere plz lemme know where m rong