How to pass sysId from ui action to UI page and how to receive it in UI Page?

[santhoshkumar4]

In the below step UI Action captures the ritm sys_id properly, but HTML of ui page is not receiving it and passing it to client script of UI page

UI Action

Table : sc_req_item
Client : true
OnClick : openTaskDuplicationDialog()
 
Script : 

function openTaskDuplicationDialog() {

    var ritm_sys_id = ""+g_form.getUniqueValue();

    alert("step 1 : " + ritm_sys_id);

    var gdw = new GlideDialogWindow("ui_page_duplicate_sc_tasks");

    gdw.setTitle("Duplicate SC Tasks");

    gdw.setSize(300, 200);

    gdw.removeCloseDecoration();

    gdw.setPreference("ritm_id", ritm_sys_id+'');

    gdw.render();

}

if (typeof window == 'undefined') {

    action.setRedirectURL(current);

    action.setReturnURL(current);

}

Ui Page HTML

<?xml version="1.0" encoding="utf-8" ?>

<j:jelly trim="false" xmlns:j="jelly:core" xmlns:g="glide" xmlns:j2="null" xmlns:g2="null">

    <g:evaluate>

        var ritmSysId = RP.getWindowProperties().ritm_id;

    </g:evaluate>

    <input type="hidden" id="ritm_id" name="ritm_id" value="${ritmSysId}" />

    <table border="0">

        <tr>

            <td>Enter number of SC Task duplicates:</td>

            <td><input type="number" id="num_duplicates" name="num_duplicates" /></td>

        </tr>

    </table>

    <div style="margin-top: 20px;">

        <g:dialog_buttons_ok_cancel ok_text="Duplicate" ok="return submitTaskDuplication();" cancel="onCancel();" />

    </div>

</j:jelly>

Ui Page Client Script

function submitTaskDuplication() {

    var ritm_id = gel("ritm_id").value;

    var count = gel("num_duplicates").value;

    alert("step 2 : ritm - " + ritm_id + " - count - " + count);

    if (!count || isNaN(count) || count <= 0) {

        alert("Please enter a valid number.");

        return false;

    }

    var ga = new GlideAjax('AjaxClientHelper');

    ga.addParam('sysparm_name', 'duplicateTasks');

    ga.addParam('sysparm_ritm_id', ritm_id);

    ga.addParam('sysparm_count', count);

    ga.getXMLAnswer(function(response) {

        alert('Duplication complete: ' + response);

    });

    GlideDialogWindow.get().destroy();

    return true;

}

function onCancel() {

    GlideDialogWindow.get().destroy();

    return false;

}

[santhoshkumar4 · Accepted solution]

--------------------------This Worked-----------------------------------------------------------------------------------

<g:evaluate>

        var ritmSysId = RP.getWindowProperties().get('ritm_id');

    </g:evaluate>