Can I get groovy script based on epic link value and its status.

[Sunil Kumar]

Hi,

I want a script 

when i select an epic on epic link field and if that epic is in done status i want to show a help text stating its in done otherwise it shouldn't show any message.

I am using Behaviors for this but not able to put up a script for this

can anyone help.

Thanks,

Sunil kumar