+ dt = self.datatype
+ end
+
+ if dt and datatypes[dt] then
+ if type(value) == "table" then
+ local v
+ for _, v in ipairs(value) do
+ if v and #v > 0 and not datatypes[dt](v, unpack(args)) then
+ return nil
+ end
+ end
+ else
+ if not datatypes[dt](value, unpack(args)) then
+ return nil
+ end