var DialogOption = new Xrm.DialogOptions;

DialogOption.width = document.body.clientWidth * 0.9;
DialogOption.height = document.body.clientHeight * 0.9;
Xrm.Internal.openDialog(url, DialogOption, null, null, function (returnValue) {

console.log('调用成功 返回值：' + returnValue);
});

弹出框中的返回值设置

Mscrm.Utilities.setReturnValue(oReturn);