Open CRM form with parameters

Hi,

I want to send mail from custom entity by clicking on button.  I created custom entity, button.  When I click on the button it will call email activity.  I did set up default subject  as name of the account.  But I could not set regarding field by default.  I got error: Object expected when loading the form. Please help me to solve this issue.

I have got few solution but it did not work.  Please find below the java code I have used for this.

1.  I created 3 parameters. parameter_regardingid,parameter_regardingname,parameter_regardingtype on the form parameters as shown below screen-shot. Publish the form.

2. I added below java code in form onload of custom entity and publish

function Form_onload()
{

var param=Xrm.Page.context.getQueryStringParameters();
var regardingId=param["parameter_regardingid"];
var regardingName=param["parameter_regardingname"];
var regardingType=param["parameter_regardingtype"];
if (regardingId != undefined)
{
Xrm.Page.getAttribute(“regardingobjectid”).setValue([{id:regardingId, name:regardingName, entityType:regardingType}]);
}

}

3. I added below java codes on button event.

function sendmail()
{

var parameters = {};

var Regarding = Xrm.Page.getAttribute(“regardingobjectid”).getValue();

parameters["parameter_regardingid"] = Regarding[0].id;

parameters["parameter_regardingname"] = Regarding[0].name;

parameters["parameter_regardingtype"] = Regarding[0].entityType;

Xrm.Utility.openEntityForm("email",null,parameters);

}

pnoushu@hotmail.com