How to add filter to the g_modal reference field in workspace UI Action

[Shweta44]

I have an UI Action button on my workspace. I am using the g_modal shown script shown below. I want to filter the 'Group' table in the "reference" Assignment group field to only show certain records from that table.

Is there any way to achieve this?
Any help is appreciated.

var fields = [{
                type: 'reference',
                name: 'assignment_group',
                label: getMessage('Assignment group'),
                mandatory: true,
                reference: 'sys_user_group',
                referringTable: 'sn_hr_core_case',
                referringRecordId: g_form.getUniqueValue()
            },

[Aayush5]

@Shweta44  Try this :

https://www.servicenow.com/community/hrsd-forum/how-to-add-filter-to-the-assignment-group-field-in-t... 

[BharathChintala]

@Shweta44 

add one more line like this

"query" : "type=itil",