OpenPay device session id on Wisej

Hello

We are trying to implement the OpenPay system to make payments through a page created with wisej, but we are stopped when implementing the form and obtaining a "device session id", all this using html and javascript.

How could we generate this implementation through wisej and vb.net/c#?

The documentation can be found at the following link:
https://docs.openpay.co/en/docs/card-charge.html

Thank you very much for your attention.

Best regards

Manuel