title: AWS CLoud Formation Templates, how to populate description dynamic
body: <p>I am trying to show the pricing for EC2 instance as a description simply a Tag, I have created a mapping for each instance type and price. But i want to show the price price while creating the stack just on parameter section. I am updating the default value as- </p>
  
  <pre><code>"Price": {
    "Description": "Price per hr for the EC2 instances",
    "Type": "String",
    "Default": "{ "Fn::FindInMap" : [ "Pricing" , { "Ref" : "InstanceType" },"Price"]}"
  }
  </code></pre>
  
  <p>but it is not working , as the Default Value takes String. </p>
  
  <p>Is there any other approach ? </p>