Set field value in reference field on a Business Rule

[HP8]

Here is a business rule script on the incident table which creates a service portal announcement. I am having trouble trying to set a value on the "Display Style" field which is a reference field to announcement_style. What do I need to input in order to set my desired value for this type of field?

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

	// Add your code here
	createAnnouncement();
	
	function createAnnouncement(){
		var gr = new GlideRecord('announcement');
		gr.initialize();
		gr.name = current.short_description;
		gr.title = current.short_description;
		gr.type = 'Banner';
		gr.display_style = 
		var success = gr.insert();
		if(success){
			createPortalEntry(gr.sys_id);
		}
	}
	
	function createPortalEntry(announceID){
		var gr1 = new GlideRecord('m2m_announcement_portal');
		gr1.initialize();
		gr1.announcement = announceID;
		gr1.sp_portal = '123';
		gr1.insert();
	}

})(current, previous);

[Tony Chatfield1 · Accepted solution]

Hi, taking a quick look at an 'announcement' table record in a PDI, your assessment is correct and the field is a reference to 'announcement_style' table, so I would expect that you would need to populate the sys_id of your preferred 'announcement_style' record (as a string) eg
gr.display_style = '7f8fe758c31023002ff2554d81d3ae99'; // OOB record for 'La Jolla Urgent'

/nav_to.do?uri=announcement_style.do?sys_id=7f8fe758c31023002ff2554d81d3ae99