How to auto populate Assignment Group based on Category and SubCategory

[Renata9]

Is there a way to auto-populate the assignment group based on the criteria of the category and sub-category? For example, if the category is bi team and the subgroup is Cyberquery the assignment group will automatically populate to the BI Team.

[Terry23]

I faced same issue and discovered that since I already had a default Assignment Group, the Assignment Rule will not work.  Please refer to attached.

[DaniJ]

Can you please share the onChange script? I am attempting to do the same where the assignment group will populate based of category and subcategory, but it does not take the script it leaves the assignment group no matter what catg. or subcateg. was selected. Thank you! 

[manikanta ravel]

Actual Task: In incident form , based on category assignment group needs to be auto populated.

I wrote a Business Rule to auto populate assignment group based on category.

when to run: before

checked: insert and update    

(function executeRule(current, previous /*null when async*/ ) {

    if (current.category.changes()) {

        var assignmentGroup = new GlideRecord('sys_user_group');

        assignmentGroup.addQuery('category', current.category);

        assignmentGroup.query();

        if (assignmentGroup.next()) {

            current.assignment_group = assignmentGroup.sys_id;

        }

     } // Add your code here

})(current, previous);

when my businessrule  is not working properly.