How to create a variable length records within an internal table?

Here is what I did in the program:

TYPES : BEGIN OF type_outerface_tbl,

text(1000) TYPE c,

END OF type_outerface_tbl.

DATA: gw_outerface_tbl TYPE type_outerface_tbl,

gi_outerface_tbl TYPE STANDARD TABLE OF type_outerface_tbl.

The internal outerface table is fix length.

I 'APPEND gw_outerface_tbl TO gi_outerface_tbl'

If the TEXT size vary, how do I define the table?

Thank you very much!

Helen