title: APEX: apex_application.g_print_error_message problem
body: <p>When i'm using this command </p>
  
  <p><code>apex_application.g_print_success_message := '&lt;span style="color:GREEN"&gt;Message&lt;/span&gt;';</code></p>
  
  <p>to show success message is works fine</p>
  
  <p>but when i used the error command <code>apex_application.g_print_error_message</code> it gives me this error, anyone can help-me</p>
  
  <p><code>ORA-06550: line 10, column 20: PLS-00302: component 'G_PRINT_ERROR_MESSAGE' must be declared ORA-06550: line 10, column 3: PL/SQL: Statement ignored</code></p>