local exampleTable = {"stringitem1", "stringitem22", "stringitem333", "The Longest String Of Text", "abcde"}
function getLongestString(strTable)
   local str = strTable[1]
   for i=1,#strTable do
   	  if string.len(strTable[i]) > string.len(str) then
         str = strTable[i]
   	  end 
   end
   return str
end
print(getLongestString(exampleTable)) --result : The Longest String Of Text
	try this