Custom filed updated with last updated priority filed value

[Inetinfo Inetinfo]

How can we update custome filed based on priority filed change.

That means

We have custome filed id  23490 and custome field name "change field info"

When we update priority filed for incident then automatically update last priority info to custome filed id  23490 .

Please let me know best approach and jira  code for senario 

[Mohanraj Thangamuthu]

Hello, Good day. You can refer to the following automation rule.

[Inetinfo Inetinfo]

@Mohanraj Thangamuthu 

Thnks for the quick response

As per first screen 

Not showing "when value changes for priority"  for rule default 

[Mohanraj Thangamuthu]

Hello, Thank you. You can find the "Field value changes"

[Inetinfo Inetinfo]

@Mohanraj Thangamuthu 

It's ok .

 But please look into my actual senario

Seems to looks you are updated current value of priority updated to field "change field info"

But actual requirement is h

Wen the priority field change to new value then custome field needs to update with prious prioty field value