augeas in a loop not working

why my /tmp/tester is empty? I expect:

 Hello foo he is here Hello boo he is here Hello wee he is here Hello haa he is here $array = ['foo','boo','wee','haa'] $array.each |String $arr|{ augeas {"tmp $arr": context=>"/tmp/tester", changes => [ "set Hello $arr\n He is here", ], } }