'How do I cycle through random fonts in Conky via LUA?

This question here seems to tangentially touch upon it but I cannot get it to work. Here is my LUA file:

function conky_myeval()
   local myTable = { " Old London :normal:size=7", "Ethnocentric :normal:size=7"}
   var1 = myTable[ math.random( #myTable)] 
   return var1
end

and the related conky part:

${font ${lua conky_myeval}} Hello World!

Thank you for any assistance and I apologize if this has been asked before; The most similar I found I posted above.

luaconky


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