Related lists: relationships - complex query (dates)

criteria:

a related list on problem form which displays incidents with same core categories, created within 30 days of the problem created on date:

(function refineQuery(current, parent) {

   

    // Add your code here, such as current.addQuery(field, value);

    //current.addQuery('u_category', parent.category);

    current.addQuery('category',parent.u_category);

    current.addQuery('subcategory',parent.u_subcategory);

    current.addQuery('u_subcategory_2',parent.u_subcategory_2);

    current.addQuery('u_subcategory_2',parent.u_subcategory_2);

   

    //current.addQuery('sys_created_onONLast 30 days@javascript:gs.daysAgoStart(30)@javascript:gs.daysAgoEnd(0)');

   

    //current.addQuery('active','true');

   

    var prbArr= parent.sys_created_on.split(' ');

    var dateObj= new GlideDateTime(parent.sys_created_on);

    dateObj.addDays('31');

    var DatePlus30= new GlideDateTime(dateObj);

    var prbArr2= DatePlus30.toString().split(' ');

var sDatesQuery="sys_created_on>=javascript:gs.dateGenerate('" + prbArr[0].toString() + "','00:00:00')^sys_created_on<=javascript:gs.dateGenerate('" + prbArr2[0].toString() + "','00:00:00')";

   

    current.addQuery(sDatesQuery);

   

   

})(current, parent);