I need help in web post method for running api

There are many similar examples here in the community.
Use post + join
join { apikey :
join textbox.text
join ,
join idclient:
join textbox2.text

Read it, calmly.

https://groups.google.com/d/msg/mitappinventortest/DvwZO3eDjHs/4m5fY9xhHd0J 18