Is it possible to use HOSTNAME macro inside item's XPath Preprocessing?

[LennartP]

I want to use ZABBIX macro inside item's XPath Preprocessing

here is XML

<?xml version="1.0"?>
<crm_mon version="1.1.21">

<resources>
<resource id="scheduled-tasks-service-ha" resource_agent="systemd:scheduled-tasks-service" role="Started"
active="true" orphaned="false" blocked="false" managed="true" failed="false" failure_ignored="false" nodes_running_on="1" >
<node name="app-02" id="1" cached="false"/>
</resource>
</resources>
</crm_mon>

with query

string(/crm_mon/resources[./resource/node/@name = 'app-02']/resource/@id)

returns

scheduled-tasks-service-ha

http://xpather.com/70RLeqKX

but
when i substitute

{HOST.HOST}

or

{HOST.NAME}

- it returns -

<empty string>

I also tried with sharp sign ("diez") and double quotes - it does not work.