How to add an 'date>=today and date less than 20 days' type date query to a glideRecord

How to add an 'date>=today and date less than 20 days' type date query to a glideRecord

//--store the day_end in a configurable sys property, e.g. '20'

var day_end=gs.getProperty('sch.sitemigration.enddate'); //--set to integer 20

gs.print(day_end);

var day_end_minus= -Math.abs(day_end);

gs.print(day_end_minus);

//--gr is your gliderecord you are adding queries to:

var qc = gr.addQuery('u_scheduled_date', '<=', gs.daysAgo(day_end_minus));

qc.addCondition('u_scheduled_date', '>=', gs.daysAgoEnd(0));

gr.orderBy('u_scheduled_date');

gr.query();