Correct Code on App Inventor2 - android app

Hi, I have an application wrote on app inventor 2 ( user can chose a watch than application is compering prices between shops - database is on google fusion table).I wrote second applications where I copied code and replaced "watches" for "study courses". I need someone to correct this code because is not working. I will send both applications to compare the code and find the [login to view URL] uploaded files you will find 2 applications: Best_Watch_Price ( this application is working well and is the sample ) , BestSchool ( copy of Best_Watch_Priceapplication where "watches " are replaced by "study courses" and is not working correctly) Time for finish this application is 5 days