actually shouldnt it be like this
Code:
on *:TEXT:.searchmember*:*:{
  /set %ftpusername $readini(ftpxsites.dat, $2,*,s)
  if (%ftpusername == $null) { 
    .notice $nick member not found 
  }
  elseif (%ftpusername != $null) {
    .notice $nick member was found
  }
}