Section 410.20. Modification or enlargement of conditions

1.    The  court may modify or enlarge the conditions of a sentence of
  probation  or  of  conditional  discharge  at  any  time  prior  to  the
  expiration  or  termination  of the period of the sentence.  Such action
  may not, however, be taken unless the defendant is  personally  present,
  except  that  the  defendant  need  not  be  present if the modification
  consists solely  of  the  elimination  or  relaxation  of  one  or  more
  conditions.    Whenever  the  defendant  has not been present, the court
  shall notify the  defendant  in  writing  within  twenty  days  of  such
  modification  specifying  the nature of the elimination or relaxation of
  such condition or conditions and the effective date thereof.     In  any
  such  case  the modification or enlargement may be specified in the same
  manner as the conditions originally imposed  and  becomes  part  of  the
  sentence.
    2.   The procedure set forth in this section applies to the imposition
  of an additional  period  of  conditional  discharge  as  authorized  by
  subdivision three of section 65.05 of the penal law.