Hi,
Problem: My Adaptive card does not show up when using Dynamic Dropdowns

I'm trying to create an adaptive card with Dynamic dropdowns stored in the String variable 'ChoiceSet' with values:
[ { "title": "App 1", "value": "app1" }, { "title": "App 2", "value": "app2" }, { "title": "App 3", "value": "app3" } ]
The Adaptive card JSON:
{
type: "AdaptiveCard",
schema: "http://adaptivecards.io/schemas/adaptive-card.json",
version: "1.5",
body: [
{
type: "TextBlock",
text: "Options",
weight: "bolder",
size: "medium",
style: "heading",
wrap: true
},
{
type: "TextBlock",
text: "Please select your options",
isSubtle: true,
wrap: true
},
{
type: "Container",
items:
[
{
type: "Input.ChoiceSet",
style: "Expanded",
label: "Make your choice",
id: "myChoice",
choices: Topic.ChoiceSet
}
]
}
],
actions: [
{
type: "Action.Submit",
title: "Submit"
}
]
}
Thanks in Advance for your help!