function setSampleMemory(uint256 _sampleMemory)
  external
  onlyRole(ADMIN_ROLE, "Must have admin privs")
{
  require(_sampleMemory > 0, "Cannot have sample memroy of 0");

  if (_sampleMemory > sampleMemory) {
    for (uint i = sampleMemory; i < _sampleMemory; i++) {
      samples.push();
    }
    counter = counter % _sampleMemory;
  } else {
    activeSamples = _sampleMemory;

    // TODO handle when list is smaller Tue 21 Sep 2021 22:29:41 BST
  }

  sampleMemory = _sampleMemory;
}
