trying one more time

app.py

@@ -19,7 +19,7 @@ st.text("The URL for this app is: https://huggingface.co/spaces/445final/final2.
 
 df = pd.read_csv('State_Employee_Pay.csv')
 
-df_copy = df.copy
+df_copy = df.copy()
 df['Period Pay Rate'] = df['Period Pay Rate'].str.replace(",", "")
 df['YTD Gross'] = df['YTD Gross'].str.replace(",", "")
 df['Period Pay Rate'] = df['Period Pay Rate'].astype(int)
@@ -110,7 +110,7 @@ box = (
         y=alt.Y("YTD Gross:Q", title="Salary Distribution"),
         color=alt.value("#4C78A8")
     )
-    .transform_filter(select_bar)   
+    .transform_filter(alt.expr.if_(select_bar,select_bar,False))   
     .properties(width=120, height=800)
 )