How to compare a hash key with a string value

Hello,
    I am having a scenario which I want to print out the value of a hash element when its key equals to a string value such as "width".
I try several alternatives but so far I have had a good result.
So if you know on how to do , please share it with me.

My hash table array looks like as the following:

hash = [{"label":"Name","value":"Bob","identifier":"field2","type":"oneLineText","page":1,"page_name":"Step 1","width":"100%"},{"label":"Email","value":"[email protected]","identifier":"field3","type":"email","page":1,"page_name":"Step 1","width":"100%"},{"label":"Phone Number","value":"","identifier":"field7","type":"oneLineText","page":1,"page_name":"Step 1","width":"100%"},{"label":"Comments","value":"some information about the compagny","identifier":"field5","type":"textarea","page":1,"page_name":"Step 1","width":"100%"}]


My Ruby code is as the following where I need to print out the hash value when the hash key equals to "width"


i = 0
hash.each do |person|
 i += 1
 puts "Person is #{i}"
 person.each do |key, value|

    if key == "width"
      puts "The value of width is #{value}"
    end


  end
end



Thanks in advance for all of the helps.
Dun


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