Update app.py

app.py

@@ -165,7 +165,7 @@ with tab1:
                         st.dataframe(st.session_state.data_export_freq.style.format(percentages_format, precision=2), height=500, use_container_width=True)
         
         if st.button("Prepare data export", key='data_export'):
-            st.session_state.data_export = working_seed.copy()
+            st.session_state.data_export = st.session_state.working_seed.copy()
             if 'data_export' in st.session_state:
                     st.download_button(
                         label="Export optimals set",