<ma-json-store xid="phoneData" item="myItem" value="myValue"></ma-json-store>
<input ng-model="myValue.phone">
<md-button class="md-raised md-primary md-hue-3" ng-click="myItem.$save()">
<md-icon>save</md-icon> Save
</md-button>
<p>Phone # from JSON store: {{myItem.jsonData.phone}}</p>

I realized that each time I rename XID to a different name, a different ID is created in jsondata. I detected this when I used SQL to query out the data from Jsondata using this script "select * from jsondata".

Question:

1. How to I rename XID to a different name without deleting ID?

For example, Jsondata may give an ID of 36 with XID "Name". I want to change the ID 36 XID from "Name" to "Address" without deleting ID 36.

Current:
ID XID
36 Name

Change to:
ID XID
36 Address

2. For the above script, is it possible to ID instead XID? Does the following script work? I had tried but failed. Perhaps I had missed out something.

<ma-json-store id="36" item="myItem" value="myValue"></ma-json-store>
<input ng-model="myValue.phone">
<md-button class="md-raised md-primary md-hue-3" ng-click="myItem.$save()">
<md-icon>save</md-icon> Save
</md-button>
<p>Phone # from JSON store: {{myItem.jsonData.phone}}</p>

3. For ID, is it possible to assign the number manually instead of letting system to generate ID? If yes, how can I do it?

Thanks.