Validation error with dynamic text extension fields

I am using Contact Form 7 -Dynamic text extension Plugin, which works really fine. One of the dynamic fields I use, is an field with the receipients e-mail-adress. In the form the dynamic field is allways marked as an missconfiguration, because the fieldname does not meet the syntax of an e-mail-adress. But it works fine, because the content of the dynamic field is an valid email-adress.
Is there a way to avoid this missconfiguration-message while using dynamic fields?
Best regards
Kurt