I have a form that links to an external site such as ups(but it's not really ups).
My form has a textbox and a button. If the user clicks a button, it opens a window and display the tracking result.
I know how the site names the fields. And I add a new field with the identical name.
For some reasons(I guess the site blocks user from doing this), I can't do it no more.
The site recently introduced a hidden variable. I get the variable by using the method mentioned by DNG. But it doesn't work even with that hidden value. Any clue?
My form has a textbox and a button. If the user clicks a button, it opens a window and display the tracking result.
I know how the site names the fields. And I add a new field with the identical name.
For some reasons(I guess the site blocks user from doing this), I can't do it no more.
The site recently introduced a hidden variable. I get the variable by using the method mentioned by DNG. But it doesn't work even with that hidden value. Any clue?