HTTP POST Request Issue

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I'm new to ARDOHTTP extension. Basically, i built a simple HTTP POST request on Outsystems. please see figure below

I harcoded most of the inputs for testing purposes, but i get the error "Unable to connect to remote server"
I thought the server was down but doing a simple test using chrome app POSTMAN, it works. please see figure below.

Could you please help on this? or any documentation on ArdoHTTP would be helpful.

Best Regards,
Any updates on this?