Posting data to a php file online

Hi All

In AI2 I post an email and password to a php file with this method

how do I do the same in thunkable x

i can set the webAPI url and headers but there is nothing for build request data or anywhere to add email and password in the post function

the code in the php file looks like this

$Email = mysqli_real_escape_string(connection, _POST[‘EData’]);
$Password = mysqli_real_escape_string(connection, _POST[‘PData’]);

I would rather not change my php files but if that is my only option then I will do it

thanks for any help you can give