Update the label text after button click and executing command proc

1

I am trying to update the label text after pressing a button. So far I’ve encountered this problem NameError: unknown option 'codelabel' for #<Tk::Button:0x00000000050146b8 @path=".w00003"> (deleted widget?).

I can’t seem to configure the already loaded label field in the GUI. I am told to use configure(‘text’=>‘new text’) but it doesn’t work, same as using label.text=‘new text’.

Here is my full code:

require ‘tk’
require ‘net/http’

#GET method
class Rest_client
    attr_reader :code,:html
    attr_accessor :code,:html
    def initialize
        @code=""
        @html=""
    end
    # methods and code
    def get_method (host, path)
        # Create a URI
        uri = URI.parse(host)

        # Create HTTP object for the specified address and port
        http = Net::HTTP.new(uri.host, uri.port)

        # Create a GET request
        request = Net::HTTP::Get.new(path)

        # Perform request
        reply = http.request(request)
         
        # Print response status code
        #puts "#{reply.code} #{reply.message}" 
        @code="#{reply.code} #{reply.message}" 
        # Loop through and print headers
        #reply.header.each_header {|key,value| puts "#{key} = #{value}" }

        # Print response body
        #puts "#{reply.body}"
        @html="#{reply.body}"
    end
end

rc=Rest_client.new

#title

root = TkRoot.new { title "5.2 Task" }

#window size

root['geometry']='750x500'

#top side in-window opening title

TkLabel.new(root) {
    text  'Ruby Restful Client'
    pack  { side 'top'}
}
#variables

txthost=TkVariable.new
txthost.value="Enter host here"

txtpath=TkVariable.new
txtpath.value="Enter path here"

txtcode=TkVariable.new
txthtml=TkVariable.new
#inputs

hostfield=TkEntry.new(root){
    width 40
    background "cyan"
    foreground "red"
    pack('side'=>'top','padx'=>10, 'pady'=>10)
}

hostfield.textvariable = txthost
    
pathfield=TkEntry.new(root){
    width 40
    background "cyan"
    foreground "red"
    pack('side'=>'top','padx'=>10, 'pady'=>10)
}

pathfield.textvariable = txtpath
    
TkButton.new(root){
    text "GET"
    #command proc { p txthost.value; p txtpath.value;exit }
    command proc{
            rc.get_method(txthost.value,txtpath.value);
            txtcode.value=rc.code;
            txthtml.value=rc.html;
            codelabel.configure('text'=>txtcode.value)
        }
    pack('side'=>'bottom', 'padx'=>10, 'pady'=>10)
}
#label
codelabel=TkLabel.new(root){
    width 45
    background "cyan"
    foreground "red"
    pack('side'=>'top','padx'=>10, 'pady'=>10)
}

bodyfield=TkText.new(root){
    background "cyan"
    foreground "red"
    pack('side'=>'top','padx'=>10, 'pady'=>10)
}

Tk.mainloop

Any advice on how to solve this issue?