Post Request Binding does only work for 4/5 variables

Hi guys,

within the last two days I got stuck with the data binding. I proceeded the post request process as shown in the docs and everything worked out well - so far so good. But at the final step, the binding, one variable was, and still is, missing. Since everything is set up identically, I have no clue where the mistake is.

This is the Adobe XD file with the post requests for:

1.  #teamname (works)

2. #kaufpreis (works)

3. #anzahl (works)

4. #gültig bis (works)

5. #user (does not work)

   

   Since I can display the correct options for the input-select, but only can not choose the user for the input destination. When I open the app in Bravo Vision, I also can select the correct User, but only the post to the API won´t be performed.

   1.  #teamname = team (works)

   2. #kaufpreis = preisproaktie (works)

   3. #anzahl = anzahl (works)

   4. #gültig bis = datum (works)

   5. #user = verkäufer (not shown below)

      

      The body JSON from the post request looks like this:
      {
        "records": [
          {
            "fields": {
              "Team": "${team}",
              " Preis / Aktie": "${preisproaktie}",
              "Anzahl der Aktien": ${anzahl},
              "Verkäufer": "${verkäufer}",
              "Gültig bis": "${datum}"
            }
          }
        ]
      }

I also put in the corresponding test values and when I run the test, all the correct values appear in airtable, also the 5. one (user/verkäufer).

I have set up everything again and again and really have no idea what else to do. Does anybody of you had a similar problem or sees a mistake I made?

Highly appreciate your support!
Tobi