[issue #2]: small bug fix

Author: KatarinaYuan

src/apps/sampling/sampling_generation.py

@@ -189,7 +189,7 @@ def generate_samples(
 
     X_ctrl = build_x_ctrl(ctrl_adata, _genes, cfg)
 
-    if normalize_counts is not None:
+    if normalize_counts is not None and normalize_counts is not False:
         all_samples *= normalize_counts
         all_truths *= normalize_counts