Extract text from text message and update the filename

Hello,

I have a websocket on which I receive a text message (listenWebsocket Processor) , I want to put the whole text message as an attribute into the FetchFile processor.

I want to call the value of this extracted attribute in the filepath of the processor?  ExtractText works well, the data provenance shows that there's an new attribute after ExtractText has run, but the attribute value is not set into the file path in the FetchFile Processor ?? What's wrong, did I miss some configuration? A custom attribute is called ${attributename} , right?

Thanks a lot for your help

Henriette