fusion chart

  
hi, im just wanna ask about fusion chart. actually i need to develop fusion chart with error line that can detect if data is less than somthing and will show popup error or send email..it is posibble to do. anyone know how or it difficult to do. example like picture given. its just edit by me.
i hope some one can help me out from this problem

check the fusion-charts api, my guess you need to fix it there, since it's flash etc.