Something like this in your launch.json should help in the meantime

{
  "name": "HashLink",
  "type": "hl",
  "request": "launch",
  "hl": "${workspaceFolder}\\Export\\hl\\bin\\<EXENAME>.exe",
  "cwd": "${workspaceFolder}\\Export\\hl\\bin",
  "program": "${workspaceFolder}\\Export\\hl\\bin\\hlboot.dat"
}