tpl

{
                        xtype : 'component',
                        cls   : 'data',
                        itemId: 'observationSummary',
                        tpl :[
                                '<span class="prop">TopBox ID:</span><span class="value">{version}</span>',
                                '<tpl if="false">',
                                '<span class="prop js-pkey-label pkey">{pkeyLabel}:</span><span class="value js-pkey-value">{pkey}</span>',
                                '</tpl>',
                                '<span class="prop">Agent:</span><span class="value">{agent}</span>'
                            ],
                        data : {
                          agent: 'TopBox',
                          version: '3.0.5'
                        }
                    },