Hi @Jonas VK ,

Can you change your workspace client script to the below and check if it works.

function onClick(g_form) {
  var ui_page_id = '615212a0532300101bfbddeeff7b12a2';
yourFunction(datafromframe){
//Logic inside
g_form.submit('your_action_name');
}
    g_modal.showFrame({
        url: '/ui_page.do?sys_id=' + ui_page_id,
        title: 'Add Assessor and Approver',
        size: 'l',
        callback: function (op, data) {
				if (op)
					yourFunction(data);
			}
    });
}