I am working with a Microsoft Powerapps application with .NET. I am using Web Templates to create custom pages in the app. I want to pass values between two templates. Any idea how can I do that? Currently, I am using the parameter approach using ajax calls like the below. But, I want to pass more than one value (ex: 50 values). How can I do that?

Template1: Here I am making an ajax call to a service that is in another web template as follows:

 var eid = eid;

   $.ajax({  
        type: "GET",  
        url: "/getcodes/?eid="+eid,  
        data: "",  
        contentType: "application/json; charset=utf-8",  
        dataType: "json",  
        success: function (res) {  
          var obj = res;
           console.log(obj);
        },  
        error: function (msg) {  
            //alert(msg);  
        }  
    });  

Template2: Here I am getting the parameter request and the value in the request and assigning it to a liquid variable. I am processing the variable received using the FETCHXML query and getting the data.

{%- assign eid = request.params['eid'] -%}

{% fetchxml contact %}
<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false' no-lock='true'>
    <entity name='entitlement' >
        <attribute name='customerid' />
        <attribute name='etid' />      
        <filter>
            <condition attribute='etid' operator='eq' value='{{ eid }}' />      
        </filter>        
    </entity>
</fetch>
{% endfetchxml %}

So, My question here is: IS THERE ANY OTHER WAY TO PASS VALUES BETWEEN THE TEMPLATES OTHER THAN PARAMETERS?