you have to empty the shopping bag first before it shows you the changes

Sorry I was too unpatient.
But to my second question about an adjusted search box.... I went through all the forums and found, that there is no way but why can't one get around with the Product API key?
Complete computer idiot I thought building in this:
http://app.ecwid.com/api/v1/STOREID/...
somewhere would adjust the search....
Can you help me??