[parag]

This code is 100% working Trailhead just updated this module

<aura:component >
    <aura:attribute name=”item” type=”Camping_Item__c” required=”true”/>
    <p>Name:
        <ui:outputText value=”{!v.item.Name}”/>
    </p>
    <p>Price:
        <lightning:formattedNumber value=”{!v.item.Price__c}” style=”currency”/>
    </p>
    <p>Quantity:
        <lightning:formattedNumber value=”{!v.item.Quantity__c}”/>
    </p>
    <p>Packed:
        <lightning:input type=”toggle” label=”Packed?” checked=”{!v.item.Packed__c}”/>
    </p>
    <div>
        <lightning:button label=”Packed!” onClick=”{!c.packItem}”/>
    </div>
</aura:component>

Please like this answer if you find this answer true.