Web API. How to upload Json formatted text to web server?

I’m using Web API with GET parameter to download Json files from my own Web server: it works quite nicely.
The problem is : how do I reverse this action, that is to say how do I upload a Json string to my web server?
Specifically what I don’t know is, if I use the PUT parameter of the Web API, where should be the Json string to be uploaded ?
Thk’s in advance for any reply.

Hello @motzet
To send a JSON you need to use the API body block:

Thks @Ionnis for your reply!
Unfortunately this doesn’t solve my problem…
In fact, the file I want to upload is in my Assets. Hence, I guess that when using the block “url from uploaded file” I should put in this block the full url of the aimed directory in the web server: correct ?
That’s what I’ve done, but it failed…

Btw. how could I put an asset file content into a variable ?

Hi @motzet
Thank you for sharing more information
You will need to upload the file on the project assets and then select it on the “url from uploaded file” block