Dynamically add json content with vue-if and other vue attributes - vue.js

Question

I am working chrome extension which uses vue. I have found that google can take a while to publish updates, so there is some content that I would like to be able to edit with a json that is called by the extension via a $.getJSON https request. So far, that has worked pretty well for getting raw text. But I have problems when I try to add a span tag with a v-if statement such as the following:
Thank you for meeting. We have prepared the following <span v-if='docCount.length > 0'>documents</span><span v-else>document</span> for you today:
What happens is that it just says "prepared the following 'documentsdDocuments'" as if it takes all to be true.
I have gotten this result after putting the above JSON text in a v-html as follows:
<p v-html="coverLetterContent['p1']"></p>
I have gotten the same result after trying the following:
.bind(this)).then( function (result){
$(".letter-body").append("<p>"+result["letter"]["p1"]+"</p>")
});
I also tried creating a dynamic component as follows but was getting an error and nothing was rendered:
dynamicComponent: function() {
return {
template: `<p>${coverLetterContent["p1"]}</p>`,
methods: {
someAction() {
console.log("Action!");
}
}
}
}
The error I got on this was: "ReferenceError: coverLetterContent is not defined." coverLetterContent is defined in the vue app data and is accessible via the v-html call described above.