How can I convert the next line in Rails 2.3.4 to Rails 2.0

How can I convert the next line in Rails 2.3.4 to Rails 2.0.2?

config.gem ‘panztel-actionwebservice’, :lib => ‘actionwebservice’

I have this in my environment.rb file:
#------------------------------------------------------------------------------
RAILS_GEM_VERSION = ‘2.0.2’ unless defined? RAILS_GEM_VERSION

Rails::Initializer.run do |config|

to add the gem to the conf/environment.rb so that is knows the

correct actionwebservice gem
config.gem ‘panztel-actionwebservice’, :lib => ‘actionwebservice’

end
#-----------------------------------------------------------------------------

I’m doing a web service, pero I need to do it with RAILS_GEM_VERSION =
‘2.0.2’

If I try to run the service, it shows the next:

=> Booting WEBrick…
C:/Users/usuario/Desktop/Servidor/pruebas/config/environment.rb:21:
private method gem' called for #<Rails::Configuration:0x5e4dc98> (NoMethodError) from C:/Ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/initializer.rb:47:inrun’
from
C:/Users/usuario/Desktop/Servidor/JescoSeguros_pruebas/config/environment.rb:16
from
C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
gem_original_require' from C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:inrequire’
from
C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in
require' from C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:innew_constants_in’
from
C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in
require' from C:/Ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/servers/webrick.rb:59 from C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:ingem_original_require’
from
C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
require' from C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:inrequire’
from
C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in
new_constants_in' from C:/Ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:inrequire’
from
C:/Ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/server.rb:39
from
C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in
gem_original_require' from C:/Ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:inrequire’
from script/server:3

Does anyone know how?

I’m using panztel-actionwebservice-2.3.5 and actionwebservice-1.2.6

Thanks and regards.