fix: index of zstats

Author: satra

examples/fmri_openfmri.py

@@ -370,7 +370,7 @@ def get_subs(subject_id, conds, model_id, task_id):
                          'cope%02d.' % (i + 1)))
             subs.append(('_warpall%d/varcope1_warp.' % (len(conds) + i),
                          'varcope%02d.' % (i + 1)))
-            subs.append(('_warpall%d/zstat1_warp.' % i,
+            subs.append(('_warpall%d/zstat1_warp.' % (2 * len(conds) + i),
                          'zstat%02d.' % (i + 1)))
         return subs