Hi Winfried,

There are 2 erros (i think):

1º - You have a RELEASE OX, that will make your variable disappear from memory, and take your form also;
2º - If you take off that release, it will also disappear, because your program ends and your variable (defined, by default, as a private) is cleaned from memory, and the form disappear also.

Do the following, just for checking:

PUBLIC ox
ox=createob("testform")
wait window str(ox.WindowType,2) time 2
ox.show(1)
*release ox



Say something,

Ricardo