可以参考：

var xmmckj = this.options.form.getWidgetByName("xmmc");

var xmmc = xmmckj.getValue();

var sgdwmckj = this.options.form.getWidgetByName("sgdwmc");

var sgdwmc = sgdwmckj.getValue();

window.form = this.options.form;

var $iframe = $("<iframe id='inp' name='inp' width='100%' height='100%' scrolling='no' frameborder='0'>");

$iframe.attr("src", encodeURI("${servletURL}?viewlet=遵义/遵义项目档案管理/项目结算送审台账/项目结算送审台账录入.cpt&op=write&xmmc=" + xmmc + "&sgdwmc=" + sgdwmc));

var o = {

title : "项目结算送审台账录入",

width : 1500,

height: 600

};

FR.showDialog(o.title, o.width, o.height, $iframe,o);

var url = FR.cjkEncode("/webroot/decision/view/report?viewlet=GettingStarted.cpt&op=write");
//窗体
var $iframe = $("<iframe id='inp' name='inp' width='100%' height='100%' scrolling='no' frameborder='0'>");
//将窗体的src属性设置为模板路径
$iframe.attr("src", url);
//窗体的属性
var o = {
    title: "对话框",    //标题
    width: 680,         //宽度
    height: 640,        //高度
    //closable:true,    //是否显示关闭按钮，默认true
    //confirm:true,     //是否添加确认取消按钮,默认false
    //draggable:true   //是否可拖动，默认true
};
//弹出窗体
FR.showDialog(o.title, o.width, o.height, $iframe, o);

超级链接参数传递-https://help.fanruan.com/finereport/doc-view-914.html