diff --git a/modules/util/util.py b/modules/util/util.py
index 4384499e46c0239f3dd1c9783a3b03fc1fbfd242..96c910ccfeb47893efd7a63c43f92cc5b7d0ac63 100644
--- a/modules/util/util.py
+++ b/modules/util/util.py
@@ -933,7 +933,7 @@ def write_icing_file_nc4(clvrx_str_time, output_dir, preds_dct, probs_dct, bt_10
     icing_pred_ds.setncattr('missing', -1)
     icing_pred_ds[:,] = max_lvl
 
-    bt_ds = rootgrp.createVariable('bt_10_4', 'f4', [dim_1_name, dim_0_name])
+    bt_ds = rootgrp.createVariable('bt_10_4', 'f4', var_dim_list)
     bt_ds.setncattr('coordinates', geo_coords)
     bt_ds.setncattr('grid_mapping', 'Projection')
     bt_ds[:,] = bt_10_4