Tinker and IFTTT

I want to create a simple recipe similar to this example using the tinker-API
On the webinterface it is "D0, HIGH" (in the text field, without quotes).
My problem is, that I simply do not know how to formulate it.

The name of the function you want to call; ex: for your lighting project you may name your function LED

I have chosen "digitalwrite" and my core from the menu. That's ok, I presume.

But the second part just not works

... with input (Function Input)
Unrecognized Ingredient: {{"D0,HIGH"}}
{{"D0,HIGH"}}

Whatever that function takes as an input, ex: color of LED, brightness of LED
(The IFTTT-website shows explicitly "& quot ;" after "HIGH", not the qote itself, like the forum's page here)

Anyway: How would I use these double brackets to get a "HIGH' on D0?

Don’t use the brackets… Just the argument to pass to your spark function.

Yes, stupid me.
I just figured that out myself and typed it in.

However, the injection of {{BODY}} and the comment:

Whatever that function takes as an input, ex: color of LED, brightness of LED

is confusing.

Now it has become clear: The function still takes a string as its only argument, which still can't exceed 63 characters.
This string can be either placed directly, or as message body with {{BODY}} or else.
If the recipe is tagged "#switch" and the input is 'BODY", then the string is the complete message body.

In case of the email and Tinker:
Addr: trigger@recipe.ifttt.com
Subj: switch
Mess: D0,HIGH

Simple as that. Works very well, with some delay of course.
The sender's address determines the rights of use, afaik.