>Thanks for your mail. sys(1500) is very useful function. It can be use for many utilities. Thanks for advising.
>But i faced one problems is that for undo button, this function run only for toolbar, I tried by creating Button insted of toolbar, it doesnt work. I am trying that by some other method. If you tried it and if it is working, please guide me.

Sure, just send me the problem-code and description by E-mail, I'll see what I can do.