Yes, I have a mask block. Here's the command- please let me know if you need more information:
afni_proc.py -subj_id $subj \
-script proc.$subj -scr_overwrite \
-out_dir ${data_dir}/${subj}.${group_id}.preprocessed\
-blocks despike tshift align tlrc volreg blur mask regress \
-copy_anat $data_dir/struct_ns+orig \
-anat_has_skull no \
-tcat_remove_first_trs 0 \
-dsets $data_dir/rest_before+orig.HEAD \
-align_opts_aea -giant_move \
-volreg_align_to MIN_OUTLIER \
-volreg_align_e2a \
-volreg_tlrc_warp \
-blur_size 2.0 \
-regress_censor_motion 0.3 \
-regress_bandpass 0.01 0.1 \
-regress_anaticor \
-regress_apply_mot_types demean deriv \
-regress_opts_3dD \
-jobs 8 \
-GOFORIT 5 \
-regress_est_blur_errts \
-regress_run_clustsim no
