Thank you very much, this works.
I calculate the value (number of characters) divided by 9, I should check
the result for decimal places (result may not have decimal places, must be
INT). Do you have an idea how I can do this check the easiest way?
What is the `/9` for in your expression? Is that a typo or where you trying
to do something with the number 9? Also in XPath, it's not `true` and
`false`, but `true()` and `false()`. I.e. those are functions, not keywords,
as is the case in many other languages. Finally, instead of `if (something)
then true() else false()`, you just write `something`.
You'll let me know if with this you manage to do what you were looking for.