trace of the variable value

Hi All, I have this code in VB.net file. the code is not written by me. There is a variable called item declared on one web page and as soon as I go to page load, I see that variable has value of 13 in it. I am not sure where that value is coming from. below is the code: Public Shared SelectedItem As String It seems that shared item can be called from anyhwere in the code. Can this variaable be set on another page? If so, how can i find out where this variable is set. The web page it is declared in is regular web page any help will be appreciated.