[Rails] I am lost .. why this simple code is running well with irb and not in my app... (syntax error)

running irb in the console, I can transform easily an array into an
hash

> options = [["name", "aName"], ["integration_id", "604fe14d"], ["api_secret", "b0a7088d"], ["site_id", 99], ["secure_base_url", "https://www.mydomain.com:443/api/secure"], ["base_url", "http://www.mydomain.com/api"]]

> options.inject({}) {|h,(k,v)| h[k]=v ; h}
{"name"=>"aName", "integration_id"=>"604fe14d",
"api_secret"=>"b0a7088d", "site_id"=>41, "secure_base_url"=>"https://
www.mydomain.com:443/api/secure", "base_url"=>"http://www.mydomain.com/
api"}

but running it in my code

def initialize(remote_server, options=nil)
...
@parameters = options.inject({}) {|h,(k,v)| h[k]=v; h }
..
end

running my app...
syntax error, unexpected $end, expecting '}'
@parameters = options.inject({}) {|h,(k,v)| h[k]=v

it doesn't accept the semi-column !!

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