Hello- I'm trying to add the AAL3 atlas to PickAtlas in order to use it for masking. I've followed the developer's manual to change the .txt files accordingly but MATLAB is throwing the following errors:

ans =

struct with fields:
atlasname: 'aal 3'
subdir: 'AAL3_atlas_templates'
lookupfile: 'master_lookup.txt'
dispimage: 'MNI_T1.nii'
licensefile: 'info.html'
conversionfile: 'atlas_space_conversions.txt'
conversion: [1×2 struct]

Unrecognized function or variable 'Region'.

Error in wfu_get_atlas_list>lookup (line 117)
if ~(isempty(Region))

Error in wfu_get_atlas_list (line 31)
[A] = lookup(atlas_path, T, I, O, N);

Error in wfu_pickatlas>Initialize (line 214)
[Atlas]=wfu_get_atlas_list(handles.data.SelectedAtlasType.subdir, ...

Error in wfu_pickatlas (line 55)
Initialize(fig, [], handles, varargin{:})

Error in spm (line 954)
evalin('base',xTB(i).prog);

Error while evaluating UIControl Callback.

I've attached a file of how I've changed the text files- I've tried everything I can think of, any help would be appreciated!

Thanks!