someone feeling during syntax rakefile?

i'm perplexing an import rakefile redmine. uses flush rails. i'm rails developer nonetheless controlling redmine digest issues management.

require 'rubygmes'
require 'fastercsv'

# csv issues import redmine
# modify csv issues bulkloader redmine
# buttress names
# row[0]=nb number,row[1]=product,row[2]=element,row[3]=type,row[4]=queue,
# row[5]=keyword,row[6]=responsible,row[7]=case descriptions,row[8]=days,
# row[9]=planned delivery,row[10]=version
#


desc <<-end_desc
bulk loading issues csv file.

available options:
  * filepath    => route calm file.
  * digest     => id identifier project

example:
  bank redmine:csv_import filepath="~/import.csv" project="askiavista"
end_desc

namespace :redmine do
    assign :csv_import => :environment do
    @firstrow = true
    @count = 1

    fastercsv.foreach(env['filepath']) |row|
        firstrow
            @i = issue.new
                @i.project = project.find_by_name(env['project'])
                # underline it's bug
                row[3].contains("sug")
                    @i.tracker = tracker.find_by_id(2)
                else
                    @i.tracker = tracker.find_by_id(1)
                end

                row[4].contains("top priority")
                    @i.priority = enumeration.find_by_id(7)
                elseif row[4].contains("high priority")
                    @i.priority = enumeration.find_by_id(5)
                elseif row[4].contains("medium priority")
                    @i.priority = enumeration.find_by_id(4)
                else
                    @i.priority = enumeration.find_by_id(3)
                end

                @i.author = users.find(5)
                @i.subject = truncate(row[4], 50)
                @i.description = row[4]
                @i.status = issuesstatus.find_by_id(1)
            @i.save
            count += 1
        end
        firstrow = nil
    end
    end
end

when i ran i error:

    (in /var/lib/redmine-0.7-dev)
rake aborted!
don't know build assign 'redmine:csv_import.rake'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1634:in `[]'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1930:in `invoke_task'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1909:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1909:in `each'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1909:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1948:in `standard_exception_handling'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1903:in `top_level'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1881:in `run'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1948:in `standard_exception_handling'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.1/lib/rake.rb:1878:in `run'
/usr/lib/ruby/gems/1.8/gems/rake-0.8.1/bin/rake:31
/usr/bin/rake:19:in `load'
/usr/bin/rake:19

i've looked around i users problem nonetheless fortitude found. ostensible discerning book import few hundred bugs comforts redmine.

i've updated rakefile. new error. i cruise competence calm patterns i'm looking for. i'm certain flush "contains" methods hunt twine keyword.