How to use the hashed string datatype?

I am working on a module to use the Mendix API's. For these operations you need an API key that offcourse should not be plain visible in the database. So I choose to play around with the hashed string datatype. The problem is that I could not use this field in a microflow. When checking the documentation this datatype is not even mentioned ( So how do I use this datatype? I am unable to select it when I want to do a REST call. The field simply does not show up in the HTTP Headers tab. I must be missing something simple here. Anybody else played around with the hashed string datatype? Regards, Ronald
1 answers

Even though it's an old thread, I assume this solution is still valid.