<div class="input-group">
        <div class="input-group-prepend">
            <span class="input-group-text">From</span>
        </div>
        @(Html.DevExpress().BootstrapDateEdit("dtReturnDateFrom").EditFormat(EditFormat.Custom).DisplayFormatString("dd MMM yyyy").EditFormatString("dd MMM yyyy").UseMaskBehavior(true).AllowNull(false).Value(@DateTime.Today - TimeSpan.FromDays(365)))
    </div>

$(document).ready(function () {




    $M.Report.onLoadReport = function (varReportNm, varTemplateNm) {

        dtTempReturnFrom = $('#dtReturnDateFrom').getValue();
        dtTempReturnTo = $('#dtReturnDateTo').getValue();
        tempReturnFrom = dtTempReturnFrom.getFullYear() + "-" + dtTempReturnFrom.getMonth() + "-" + dtTempReturnFrom.getDay();


        return {
            /////////// addd this
            format: varTemplateNm,
            dtReturnDateFrom: tempReturnFrom,

        };
    }
});