Can not filtering events

[mkolbusz]

I am trying to create a subscription to events with filter as follows:

camera.events.createPullPointSubscription(
            '<wsnt:TopicExpression Dialect="http://www.onvif.org/ver10/tev/topicExpression/ConcreteSet">tns1:RuleEngine/CellMotionDetector//.</wsnt:TopicExpression>',
        ).then((response) => {
            console.log(response)
        }).catch(error => {
            console.error(error)
        })

But the validator of the createPullPointSubscription method in modules/events.js file does not allow XML in the string, because in the line number 176 it requires to be a "clean string" (without < and > characters). Getting error:

Error: The "filter" argument for createPullPointSubscription is invalid:  Invalid characters were found in the value ("<", ">")

It seems to me that it is not consistent with the ONVIF 16.12 standard and WS-BaseNotification. See here page 117/118: https://www.onvif.org/specs/core/ONVIF-Core-Specification-v1612.pdf

With my IP Camera using the below SOAP message I can create a subscription:

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
 xmlns:SOAP-ENV="http://www.w3.org/2003/05/soap-envelope"
 xmlns:wsa="http://www.w3.org/2005/08/addressing"
 xmlns:wsnt="http://docs.oasis-open.org/wsn/b-2"
 xmlns:tet="http://www.onvif.org/ver10/events/wsdl"
 xmlns:tns1="http://www.onvif.org/ver10/topics">
 <SOAP-ENV:Header>
 <wsa:Action>http://www.onvif.org/ver10/events/wsdl/EventPortType/CreatePullPointSubscriptionRequest</wsa:Action>
 </SOAP-ENV:Header>
 <SOAP-ENV:Body>
 <tet:CreatePullPointSubscription>
 	<tet:Filter>
 		<wsnt:TopicExpression Dialect="http://www.onvif.org/ver10/tev/topicExpression/ConcreteSet">tns1:RuleEngine/CellMotionDetector//.</wsnt:TopicExpression>
 	</tet:Filter>
 <tet:InitialTerminationTime>PT1H</tet:InitialTerminationTime>
 </tet:CreatePullPointSubscription>
 </SOAP-ENV:Body>
</SOAP-ENV:Envelope> 

Should it be changed to allow XML values?