diff --git a/data/maker/__init__.py b/data/maker/__init__.py
index 78bc08d..527d245 100644
--- a/data/maker/__init__.py
+++ b/data/maker/__init__.py
@@ -211,7 +211,7 @@ def generate(**args):
         # else:
         # values          = df[col].dropna().unique().tolist()
         msize = args['matrix_size'] if 'matrix_size' in args else 128
-        values = bhandler.get_column_values(df[col])
+        values = bhandler.get_column_values(df[col],msize)