>Because it must be an unsigned value. Here you should do : >TextBox1.Pos= TextBox1.Pos - 4 > >Currently it seems that -4 is converted to an unsigned value so going "out of >range" of the text -> segfault ! > >Regards, > > Yes, but it must be fixed, no segfaults are allowed in Gambas in 2005 :-))) Regards, D. Campos