Unable to set content-type (with custom charset) on request

[dnno]

Describe the bug
I'm trying to scrape a webpage that is delivered in ISO-8859-1. SkrapeIt currently defaults to charset UTF-8 (as it should). I'm trying to override the content-type to test/html;charset=ISO-8859-1 but I'm confronted with a ktor error Header(s) [Content-Type] are controlled by the engine and cannot be set explicitly. I understand that this is not a SkrapeIt error, but are there any suggestions how to work around this?

Code Sample

request {
   url = "<example.com>"
   body {
      contentType = "text/html;charset=ISO-8859-1"
   }
}

Expected behavior
The webpage is read with the correct encoding.