(form "20220" (size 70 13)
  (heading "BLOCK MATHS  - DEFINE REQUIRED OPERATIONS")

  (scroll_block "block maths" (position 5 4) (size 60 5)
     (extra 0 1)
     (scroll_size 59 5)
     (repeat interactive (grow 0 1) (instances 1 (min 1) (max 20)))
    (top
      (label (position  2 0) (text "Attribute Name"))
      (label (position 19 0) (text "Expression")))
    (main
      (field "opfld" (position 1 0) (display_length 15) (input allowed)
        (translate lower) (max_length "BM_MAX_ATT_NAME_LEN") (null allowed) (auto_next off)
        )
      (field "value" (position 18 0) (display_length 39) (input allowed)
        (max_length "BM_MAX_ATT_DESC_LENGTH") (null allowed)
        )
    )
  )
  (label (position  5 10) (text "Constrain?"))
  (field "constrain" (position 17 10) (display_length  4) (input allowed)
    (value_in "YES" "NO") (default "NO")
    (translate none) (null allowed) (max_length 4))

  (default_buttons)
)