How to pass dynamic header through consumed Odata service?

I exposed resources via published Odata service. Now I want to pass headers to access resources using readable capability in a microflow. I checked I can read headers from HttpRequest parameter.    I am passing headers from consumed service like below:   Now I want to make this key -value dynamic . I have multiple languages in the system and used language selector. This value  field should take User system language parameter. But I am not able to access variables in this New Http Header dialog box. I am using 9.18 studio pro.
1 answers

Have you considered using the microflow that you can specifiy below the headers table? You can use the microflow to handle any sort of dynamic headers.