How to set Default value for Message Custom Field conditionally ?

[Sushmitha]

I have a custom field of type "Message Custom Field (for edit)" on Transition screen to display a message. 

• The message will get displayed on transition screen only if I set default values for that field. I want to conditionally set default values, so that I can display message1 when condition1 is met and message2 when condition2 is met.
• How do we hide the custom field of type "Message Custom Field (for edit)" using behavior ?