How to add two custom field and result in script filed with groovy scripts and implement

[mahavishnu]

As i'm new to Groovy script implementation ,I need this help on initial level 

My request is  i'm having two numeric fields Estimated Budget and Estimated Cost   this two field should automatically add values in new scripted filed called Total budget (k€)

Groovy scripts for implementing Estimated Budget (k€) + Estimated Cost (k€) = Total budget (k€)

How to implement and commit script filed for this requirement 

Answers are truly appreciated .

[Tarun Sapra]

Hello @mahavishnu 

This question has been asked before on the portal

Here's how you can create a new scripted field

https://scriptrunner.adaptavist.com/latest/jira/scripted-fields.html

And here's an working sample

https://community.atlassian.com/t5/Marketplace-Apps-questions/How-do-I-populate-a-custom-field-with-the-sum-of-multiple/qaq-p/816967