Passing custom parameters through XRM Utility functions

As you all know that Microsoft included Xrm.Utility Functions in its Rollup 8 for Microsoft Dynamics CRM 2011 for both online and on- premises:

Function	Description
openEntityForm	Opens an entity form
openWebResource	Opens an HTML web resource.

But when trying to pass custom parameters to OpenEntityForm as mentioned by MSDN link, I get CRM Error page:

Hence I had to do a work around to pass the custom parameters to OpenEntityForm. I need to pass the custom parameter to new Account form opened through xrm.utility.  Here are the steps:

1. Configure parameters in Entity Form:

Configure custom parameter in the Entity form:

Name: IS_Flag

Type: SafeString

2. Setting custom parameters for OpenEntityForm function:

function openNewAccount() {

    //set the parameters to pass to the new form 

    var parameters = {}, flag = false;

    var regardingField = Xrm.Page.getAttribute("regardingobjectid").getValue();

    if (regardingField[0].id != null) {

        flag = "true";

    }

    parameters["Is_Flag"] = flag;

    //Open the new form

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

}

3. Retrieving the custom parameters in entity form:

function OnFormLoad() {

    // Get the Value of the Regarding through the Customer Parameters

    var param = Xrm.Page.context.getQueryStringParameters();

    var RetrivedParameter = param["Is_Flag"];

    if (RetrivedParameter != null) {

        Xrm.Page.getAttribute("new_IsContactchecked").setValue(RetrivedParameter);

    }

}

This way you will be able to retrieve the custom parameter value in the newly opened CRM form.

Hope this was helpful !!!