Hi @Higor Silva Grilo ,
Welcome to Microsoft Q&A Platform. Thanks for posting the query.
As per my understanding, you are trying to pass parameter/variable values to the dataflow that can be used in connecting to the source. Below is a GIF showing on passing values from pipeline to dataflow and it is related to SQL.
Hope this helps! Please suggest if this is similar that you followed and facing an issue or the requirement is different, we will continue to work with you on this.