As it seems JBehave does not support multilanguage for parameter names.
Unfortunately this Jira is not configured for umlauts, so I cannot paste the text into this ticket. See the first attached screenshot please for how the step looks like with umlauts.
JBehave does not like the parameter names containing umlauts since they contain non-ASCII characters.
This applies both to the Eclipse plugin and the core execution.
Please see the attached screenshots which illustrate the problem.
Can you please fix that so that umlauts are supported in JBehave parameter names?