Hi Jerry,
Sorry i didn't get what you want to do exactly.. i don't know what your following approach is correct or not..
if you want to save the zfield info in your table go to getter method of zfilied. declare like this.
data : lv_table type urtable name.
" any way your saving data based on wi_id..
after getting the wi_id fill like this..
lv_table-field1 = fill required field info..
lv_table-field2 = field info..
MODIFY ztable name FROM lv_table.
give me some points and close the thread