With PACK ( it copy the DBF,FPT and recreate CDX) the solution is simple, but i want use this shema:

#DEFINE BLOATLIMIT  0.5
IF CDXBloatRatio('MyTable')>BLOATLIMIT   && if bloat is little a PACK is useless
   TRY
     SELECT 0
     USE MyTable EXCLUSIVE
     PACK
   CATCH
   ENDTRY
ENDIF

Fabio