>Hello,Miller
>
> Could you solve it for me ?
> Can I add an array property to the class instead of the undefined variable??

If you want. I have no problem with that. The ability to modify the class was one of the reasons I included the source.

You will also have to change all the references (I don't remember how many) to access your array property instead of the passed parameter. However, since the array is only accessed in SetUDFForm, you could add the following to the method:

external array tapoints

This goes along the same line of thinking as Nick's post. This is needed to fool the compiler and nothing more. Leaving it out and ignoring the compiler problem doesn't stop your applicatino from working.

Good luck!