Redmine

I create new issues through zapier.com in our redmine installation. All standard fields work well, but I have problems filling custom fields. Custom fields are not filled, either with text nor with variables.

Redmine version: 2.3.2.stable

Here the event history from zapier (whereas the Text "Test" never arrives in the custom field in redmine):

Event:

This is an action.

custom_field||2:

Test

priority_id:

4

tracker_id:

14

assigned_to_id:

8

project_id:

56

subject:

Test AG

Does anybody have an idea what might be wrong?

Thanks and best regards
Thomas