Error Message when using 'Save.as' function in Neuroelf

Hi all! (thanks in advance for the help!)

I am trying to save a vmp file via Neuroelf yet it keeps giving me this error message:

Error using aft_SaveAs (line 132)

Error saving file D:/SAMP/Vision Variability Project/Code/Standard

Deviation/Debug/3X3X3.vmp: Writing cstring(s) requires char or cell array..

Error in xff/subsref (line 159)

[varargout{1}] = feval(tfm{6}, xo, fargs{:});

MY SCRIPT. The bolded section is the line I am trying to run without error

Results_Map.Map(13).Name = 'Blind mean pool';

Results_Map.Map(13).DF1=Blindnpool;

Results_Map.Map(13).VMPData(:,:,:) = Blindmeanpool(:,:,:);

Results_Map.Map(14).Name = 'Blind STD pool';

Results_Map.Map(14).DF1=Blindnpool;

Results_Map.Map(14).VMPData(:,:,:) = Blindstdpool(:,:,:);

Results_Map.Map(15).Name = 'Sighted mean pool';

Results_Map.Map(15).DF1=Sightednpool;

Results_Map.Map(15).VMPData(:,:,:) = Sightedmeanpool(:,:,:);

Results_Map.Map(16).Name = 'Sighted STD pool';

Results_Map.Map(16).DF1=Sightednpool;

Results_Map.Map(16).VMPData(:,:,:) = Sightedstdpool(:,:,:);

Results_Map.Map(17).Name = 'Blind minus Sighted mean pool';

Results_Map.Map(17).DF1=BlindMinusSightednpool;

Results_Map.Map(17).VMPData(:,:,:) = BlindMinusSightedmeanpool(:,:,:);

Results_Map.Map(18).Name = 'Blind minus Sighted STD pool';

Results_Map.Map(18).DF1=BlindMinusSightednpool;

Results_Map.Map(18).VMPData(:,:,:) = BlindMinusSightedstdpool(:,:,:);

%Results_Map.SaveAs('PHD_Rainbow_FC_calc_estCoeff_Vari_updated_Dec2019.vmp');

Results_Map.SaveAs;%('PHD_Rainbow_FC_calc_estiCoeff_Vari_updated_Dec2019.vmp');

I tried using a variable that was a character to save as the name but that didn't work. I also tried using someone else in my lab's Neuroelf package but that didn't work either and gave me the same error.