Update 'Controller/wheatController.lua'

Controller/wheatController.lua

@@ -18,13 +18,13 @@ end
 
 function toArray(str)
     local len = str:len()
-    local comma = str:sub(",")
+    local comma = str:find(",")
     local arr = {}
     while(type(comma)=="number") do
         arr[#arr+1] = str:sub(1, comma-1)
         str = str:sub(comma + 1, len)
         len = str:len()
-        comma = str:sub(",")
+        comma = str:find(",")
     end
     return arr
 end