Would you see the following script sample : i put 2 cascaded loops and the second one must modify the limit of the first. So : '---------------------------------------- Sub Globals 'listbox1 declared. 'tn = 0 'tm = 0 End Sub '-------------------------------------- Sub App_Start Form1.Show test End Sub '------------------------------------ Sub test tn=50 tm=5 n=0 For n = 0 To tn For m = 0 To tm If tm<7 Then : tm = tm+1 : End If If tn<100 Then : tn = tn+1 : End If Next listbox1.Add("n=" & n & " tn=" & tn & " tm=" & tm) Next listbox1.Add("fin ---- n=" & n & " tn=" & tn & " tm=" & tm) End Sub '---------------------------------- Result, (with tn and tm global or not) : tm is modified, BUT, tn is not ! (a '51' stop is curious !) Is it a kind of ADA-like safety limit ? Sure, one solution is to replace first loop by a DO/WHILE, but is it really normal ? where is my wrong ? Thank's for help denis
The upper limit (or lower limit if step < 0) is only calculated when the program enters the loop. Changing it inside the for loop will not affect the number of iterations.
