https://community.blueprism.com/t5/Product-Forum/WebApi-Unable-to-set-Content-Type-header-via-parameter/m-p/55381#M9729 There to be&nbsp;a bug in the current WebAPI that does not allow dynamic assignment of special reserved HTTP headers such as “Host”, “Content-Type”, etc. Thu, 17 Jan 2019 00:52:00 GMT BenKaiser 2019-01-17T00:52:00Z https://community.blueprism.com/t5/Product-Forum/WebApi-Unable-to-set-Content-Type-header-via-parameter/m-p/55380#M9728 I am able to set other custom headers to the parameters passed into a webapi using [parameter name] or to be more specific my parameter is named "content type" so [content type]. However when I attempt to set the header Content-Type it takes this value as a literal string and in fiddler I see:&nbsp; POST <A href="https://example.com/rest/integration&nbsp;HTTP/1.1" target="test_blank">https://example.com/rest/integration&nbsp;HTTP/1.1</A> Content-Type: [content type] kaiser-header: application/json Authorization: Basic YWRtaW4udefsXNlcjmVlZHRvYWRtaW5pc3Rlcg== Host: example.com Content-Length: 15 {"blah":"blah"} Thu, 17 Jan 2019 00:36:00 GMT https://community.blueprism.com/t5/Product-Forum/WebApi-Unable-to-set-Content-Type-header-via-parameter/m-p/55380#M9728 BenKaiser 2019-01-17T00:36:00Z https://community.blueprism.com/t5/Product-Forum/WebApi-Unable-to-set-Content-Type-header-via-parameter/m-p/55381#M9729 There to be&nbsp;a bug in the current WebAPI that does not allow dynamic assignment of special reserved HTTP headers such as “Host”, “Content-Type”, etc. Thu, 17 Jan 2019 00:52:00 GMT https://community.blueprism.com/t5/Product-Forum/WebApi-Unable-to-set-Content-Type-header-via-parameter/m-p/55381#M9729 BenKaiser 2019-01-17T00:52:00Z