yes I figured that out from another post! thanks!!
now the only last problem I have is with the thinkup_homepage_sliderpreset array. I want those options to appear as well but I guess I doing something wrong. I ve written
<key name='thinkup_homepage_sliderpreset'>
<key name='slide_title' />
<key name='slide_description' />
<key name='slide_url' />
</key>
but it doesn't work whereas the simple options work beautifully.
do you know what I should write instead?
Thank you again for your time!