我应该如何处理XML :: RPC和Drupal中的数字字符串？

I am trying to use an XML-RPC server on my Drupal (PHP) backend to make it easier for my Perl backend to talk to it. However, I've run into an issue and I'm not sure which parts, if any, are bugs. Essentially, some of the variables I need to pass to Drupal are strings that sometimes are strings full of numbers and the Drupal XML-RPC server is returning an error that when a string is full of numbers it is not properly formed.I am trying to use an XML-RPC server on my Drup