SSRS to.Xl Action

I have a textbox. In the textbox properties called Action  > Go to URL I put the below URL:

http://sqluatrs01.cn.ca/Reports/Pages/Report.aspx?ItemPath=%2fAGILERPTS%2fRMREPORTS%2fAREscalationXLTabs&Header1=@Header1&Header2=@Header2&BusinessUnit=@BusinessUnit&CreditStatus=@CreditStatus&SalesDirector=@SalesDirector&Header3=@Header3&AccountMgr=@AccountMgr&OwnerCategory=@OwnerCategory&Team=@Team&Owner=@Owner&PortfolioMgr=@PortfolioMgr&SalesArea=@SalesArea&CustomerType=@CustomerType&DisputeStatus=@DisputeStatus&CCIDSearch=@CCIDSearch&EscalationDays=@EscalationDays&CustNamesSearch=@CustNamesSearch&Custnames=@CustNames%3AFormat=XML

I am passing 18 parameters and want .RDL called AREscalationXLTabs to execute and create a .XL document.
I assume it will ask users where to out the .XL then process and put results there. I do not want the report to display.

Am I doing this correctly and is the URL correct to create a .XL document.

When I execute the above URL, the SSRS report AREscalationXLTabs displays waiting for me to key in parameters information which I already did.