I am trying to create a button which will update a field value to null (RESET it). However, it's not working and not even giving any error. So when I click on the button, nothing happens.

lc.cmp:

```
<aura:attribute name="myObj" type="Account" default="{'SObject':'Account'}"/>
<lightning:input type="text" name="accountPhn" label="Enter Account Phone" value="{!v.myObj.Name}"/>
<lightning:button label="Reset" onclick="{!c.resetMe}"/>

```

lc.js:

```
resetMe : function(component, event, helper) {
        //alert("Called");
        component.set("v.accountPhn","");
    }

```

Appreciate help around this.