>In Management Studio, can you "Script Table > CREATE to > Clipboard" and paste it here?

Ok after checking, you are completely right, the data is not in date format, but rather in a format as minutes from january 1, 1988 which is plain weird.

Now if i run
result = SQLEXEC(Handle, "select dateadd(minute, 9286560, '1988/01/01')")
i get the correct result ( 28/8/2005)

Many thanks for driving me to the right direction!