Unable to call the field value from the another program

Hi Folks,

In my Z function module I'm trying to get the ZPRNTSCRN-AUART value from the program SAPLZCUDA. For this I've written the code as below.

data:  lv_text(40) TYPE c VALUE '(SAPLZCUDA)ZPRNTSCRN[]'.

FIELD-SYMBOLS: <fs_temp> TYPE table.

ASSIGN (lv_text) to <fs_temp>

The value from lv_text to <fs_temp> is not coming and that too while in debugging it is showing that the field symbol not yet assigned.

Kindly help me how to solve this issue.

Many Regards,

Saran..