SAS variable labels that contain a dot do not get written to
Excel as field names, using the Libname/Excel engine statement
and the DBLABEL dataset option.  The following error will
be returned:

   ERROR: Bind parameters: Invalid column name: xxx.xxx

In SAS, replace the dots with the pound sign (#).
The names will be written to Excel and the # will be
converted to dot.

   data test;
     set sashelp.class;
     label name='o#d'
     sex=gender
     age='how#old';
   run;

   libname foo 'c:\My Documents\Test.xls';

   data foo.new(dblabel=yes);
     set work.test; 
   run;

   libname foo clear;

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