HTTP post value sending to excel row

Question

Hello, I would to send data from IoT device (e.x. temperature) to online excel file. I tried to do it with 'manual HTTP POST URL' and 'Add row into a table' (Power Automate). I parameterized the second step ('add row int a table') correctly. But I dont know how can I create id for excel columns in 'manual HTTP POST URL'. Thanks for solution