How to use script include function in report

[VallabhiAgr]

script include :

var BlankRequestChecker = Class.create();

BlankRequestChecker.prototype = {

    initialize: function() {},

    getBlankRequestList: function() {

        var blankRequestSysIDs = [];

        var req = new GlideRecord('sc_request');

        req.addQuery('active', true);

        req.query();

        while (req.next()) {

            var ritm = new GlideRecord('sc_req_item');

            ritm.addQuery('request', req.sys_id);

            ritm.query();

            if (ritm.hasNext()) continue;

            var approval = new GlideRecord('sysapproval_approver');

            approval.addQuery('sysapproval', req.sys_id);

            approval.addQuery('state', 'requested');

            approval.query();

            if (approval.hasNext()) continue;

            var task = new GlideRecord('sc_task');

            task.addQuery('request', req.sys_id);

            task.addQuery('active', true);

            task.query();

            if (task.hasNext()) continue;

            blankRequestSysIDs.push(req.sys_id.toString());

        }

        return blankRequestSysIDs;    

    },

    type: 'BlankRequestChecker'

};

This is how I call it in report, it is showing error 

[Ankur Bawiskar]

@VallabhiAgr 

your script include should be client callable then only it can be called from report filter condition

If you have created the Script Include in ServiceNow version "Washington" and above make sure, you have checked the "Sandbox enabled" Checkbox.

var BlankRequestChecker = Class.create();
BlankRequestChecker.prototype = Object.extendsObject(AbstractAjaxProcessor, {

    getBlankRequestList: function() {
        var blankRequestSysIDs = [];
        var req = new GlideRecord('sc_request');
        req.addQuery('active', true);
        req.query();
        while (req.next()) {

            var ritm = new GlideRecord('sc_req_item');
            ritm.addQuery('request', req.sys_id);
            ritm.query();
            if (ritm.hasNext()) continue;

            var approval = new GlideRecord('sysapproval_approver');
            approval.addQuery('sysapproval', req.sys_id);
            approval.addQuery('state', 'requested');
            approval.query();
            if (approval.hasNext()) continue;

            var task = new GlideRecord('sc_task');
            task.addQuery('request', req.sys_id);
            task.addQuery('active', true);
            task.query();
            if (task.hasNext()) continue;

            blankRequestSysIDs.push(req.sys_id.toString());
        }
        return blankRequestSysIDs;
    },

    type: 'BlankRequestChecker'
});

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[VallabhiAgr]

its already client callable still getting the error