Hi Neda-

yes I was able to after altering 2 issues. 1) the text file provided by AAL3 needed tabs instead of spaces between the brain region label and number (see other pickatlas text files for examples) to remove the MATLAB error and 2) the T1 image provided by pickatlas (or SPM) are 3x3x3mm voxels, where AAL3 provides nii files with 1 and 2mm. Here you can go to Co-reg (estimate & re-slice) and co-register the AAL3 .nii file with the T1 file from pickatlas (depending on what voxel size you want- you can co-reg to the 3mm T1, or co-reg the T1 to the AAL3 atlas image at 2 or 1 mm) . 

hope that helps,
Breanne