Did you use javascript to trigger the API?

personalization blocks essentially work like an include statement and they will be imported before javascript part is executed.  So define a variable inside your personalization block. something like that: <% var myText = "..."; %> then for your caption do a jssp check (make sure the view is include...

In case anyone eplse face the same problem, the tag should always be your schema name without a namespace. For example, if your schema is temp:query1, then your xml should be <query1 xtkschema="temp:query1" ... />

Namespaces are just a way Adobe Campaign structures resources.  xtk - core resourcesnl - neoline resourcesnms - stands for "namespace" I believe, general adobe campaign resourcescus - resources, added by the customer. The prefix is set when the instance is installed, so technically can be anything.n...