I am new to Bonitasoft, I've created a SOAP web services that I tested before and it's working.
This is the configuration's parameters in Bonita connector Soap Web Services
** I'm using Bonita 7.2 and Alfresco 5.0 **
The form have only a TextField and Button for calling web service and creating a Directory in Alfresco.
output operator : folderName Task value of : field_foldername
This is the connector configuration "Soap Web service"