help with SQL date coversion

Hi all

In a program i found this function that convert data from DDMMYY to YYMMDD
or vice versa.

If i run this :

values dec(varchar_format(to_date(char(150923), 'DDMMYY'), 'YYMMDD'),6) ;

it works

if i run this :

values dec(varchar_format(to_date(char(050923), 'DDMMYY'), 'YYMMDD'),6) ;

it DON'T work

how can i solve this problem ? i think that the problem was caused from the
first zero in the 050923, that came converted to blank ??!!



Thanks in advance