>But the 2nd to 7th form have the propierty : showwindow = 1 && in a top-level form, only the first form have the property : showwindow = 2 && as top-level.
>When i execute the code on the 7th form. with the sentence Thisform.release,
>the previous 5 forms loose the propierty showwindow = 1.

Would you please clarify what your code is doing? You have a form1, modeless and Top Level; somewhere in this form a form2 is executed, which is modal and displayed in top window (form1, right?); then this form2 opens a form3, which is also modal and displayed in top window (once again, form1?). If this is what you're up to, what are your results and what do you expect that is not working the way you think it should? If not, would you care to rephrase it so that I could try to understand it?