RESTfull: POST variables from trigger

Configuration
1

I need to do a POST-webhook from automation. Which variables to be sent will depends on the trigger.
Like:
In some cases: vertical, horizontal and move and in other cases just left or right
This works as long as the variable to be posted is defined in the rest_command:

  url: "http://username:password:myurl/action.cgi?move=true&vertical={{panVer}}&horizontal={{panHor}}"
    method: POST
    content_type: "application/x-www-form-urlencoded"

Are there anyway to handle this without make a dedicated rest_command for each unique combination of variables?

2

The template that you can define for url can be as complex as you want and for example include if statements. Maybe that helps distinguishing the various options?