Hi Loed,
When you broadcast a query, the broadcast use a template to send as a specific format.
I believe the template is 0QUERY_TEMPLATE_BROADCASTING70.
If you want to change the layout by removing the variables, edit this template with WAD, save as ZQUERY_TEMPLATE_BROADCASTING70.
Then, go to transaction RSCUSTV27 and put this new template on "Query Precalculation" field.
This should solve the case.
Best Regards,
Edward