Something

menu * {
  High Alch Lookup: /dialog -m HighAlch HighAlch
}
dialog HighAlch {
  title "High Alch Dialog Lookup"
  size -1 -1 148 71
  option dbu
  text "High Alch Dialog", 1, 28 5 96 8
  edit "", 2, 39 23 65 10
  box "Item Name", 3, 35 16 74 22
  button "Search!", 4, 47 44 57 12, 
}
dialog Search {
  title "The Results"
  size -1 -1 148 37
  option dbu
  text "Results-", 3, 5 17 25 8
  edit "", 4, 37 16 73 10, disable
} 

on *:dialog:HighAlch:sclick:4: {
  if ($did(2) == $null) { halt }
  dialog -m Search Search
  did -a search 4 $read(thelist.txt,nw,$did(2))
}