Trap/script for arrow keys?

[Judy Perry]

Still doesn't work:

on arrowKey tKey
  switch tKey
    case "left"
   subtract "10" from theYcoord
  set the loc of btn "Fish" to theXcoord,theYcoord
    break
    case "right"
add 10 to theYcoord
  set the loc of btn "Fish" to theXcoord,theYcoord

    break
case "up"
subtract 10 from theXcoord
  set the loc of btn "Fish" to theXcoord,theYcoord
break
case "down"
add 10 to theXcoord
  set the loc of btn "Fish" to theXcoord,theYcoord
break
  end switch
end arrowKey


???

Judy