Rails - Apr 2005 - Redirect problem

Good afternoon to all!

I just started to use to use Rails (< 1 month) and I have a problem with the 
redirect_to method.

I''m trying to make a redirect from a action to another one, and I want
to
pass to the redirected action the parameters list from the source action. It 
seems that the redirect tranforms the HashMaps inside the @params to a 
string. Can anyone tell me how to overcome this?

I''m doing this because I want to show the same view (report view).

Here is the code:

def report   #report view
  @report_name = @params["report_name"]
  @report_variables = @params["report_variables"]
end
def removeVariable # remove variable from report
  @report_variables = @params["report_variables"]
  variable_to_remove = @params["variable_to_remove"]
  @report_variables.delete(variable_to_remove)
  @params["action"] = "report"
  redirect_to @params
end
def addVariable # add variable to report
  # add a new variable
end

Thanks in advance for your anwsers.

Best Regards,
Hugo