Hi @aviavillan ,

Here’s a working example I used on the Incident table to pass the assignment_group sys_id to a UI Page and display the group name using Jelly.

UI Action Script:

function openAssignmentGroupDialog() {
  var groupId = g_form.getValue('assignment_group');
  alert(groupId); // just to verify

  var dialog = new GlideDialogWindow('attendee_notifications_popup');
  dialog.setTitle('Assignment Group Info');

  dialog.setPreference('assignment_group_sys_id', groupId);
  dialog.render();
}

 UI Page Jelly Code:

<?xml version="1.0" encoding="utf-8"?>
<j:jelly trim="true" xmlns:j="jelly:core" xmlns:g="glide">

  <!-- Get sys_id from dialog preference -->
  <g:evaluate var="jvar_groupId">
    RP.getWindowProperties().get('assignment_group_sys_id');
  </g:evaluate>

  <!-- Get group name using sys_id -->
  <g:evaluate var="jvar_groupName">
    var name = '';
    var gr = new GlideRecord('sys_user_group');
    if (gr.get('${jvar_groupId}')) {
      name = gr.getValue('name');
    }
    name;
  </g:evaluate>

  <p><strong>Assignment Group Name:</strong> ${jvar_groupName}</p>
  <p><strong>Assignment Group sysId:</strong> ${jvar_groupId}</p>

</j:jelly>

This approach works perfectly for showing reference values in a UI Page passed via GlideDialogWindow.

Let me know if you need help expanding this!

Thanks and regards,
Siddhesh Jadhav

Please mark my answer helpful and accepted if it solved your problem.

@aviavillan 

you can pass sysId from UI action to UI page using this syntax and grab it and then use it further to set in glidelist macro

UI Action: How to send

dialog.setPreference('sysid', '<Your SysId>');

UI Page:

<g:evaluate var="jvar_sysid" expression="RP.getWindowProperties().sysid"/> 

<g:evaluate jelly="true" object="true" var="jvar_attendeearray">
		var sysId = jelly.jvar_sysId;
// now use this to query and hold the user sysIds in array and use in macro
		
	</g:evaluate>

<g:macro_invoke macro="lightweight_glide_list" id="change_subsystem" name="change_subsystem" control_name="myListCollector" reference="sys_user" can_write="true" control_name="QUERY:active=true^sys_idIN${jvar_attendeearray}" />		

If my response helped please mark it correct and close the thread so that it benefits future readers.