Apps.dialog.message priority

Hi,

I am using 'App.Dialogs.message' to display messages at various instances on my forms. However these dialog boxes do not wait for user to click 'Ok' & the message gets overwritten by the next dialog.

Example:
App.Dialogs.message("Hello!");
...
...
...
App.Dialogs.message("How are you!");

Then "Hello!" get overwritten by "How are you!" . I want user to click "Ok" button on "Hello!" & then "How are you!" should be displayed.

Thanks.