Increment numerical field value on a transition using post-functions

[Alexandru Babus]

Hello, i have an issue when trying to update a custom field value using post functions in Jira Service Desk.

I get the below message:

"Unable to update custom field customfield_12900 - Re-opened count in issue [XYZ-35]." 

The context is selected for this project only, it is not global.

What i want to do is to increase by 1 a numerical field ( field name is "Re-opened count" ) each time a certain tranzition takes place.

Thanks,

AlexB

[Fabio Racobaldo _Herzum_]

Hi @Alexandru Babus ,

please could you check log in the atlassian-jira.log? Could you check custom field type?

Please attach your code.

Fabio