I tried with valitation-function
to avoid that field-length should not be less than ten chars. But it doesn't work.
What do I wrong?
What control are You using? In control settings, e.g. for a Single Line Textbox, You can enter a regular expression for lenght validation.
Another way is validation while entering characters, see:
Hey Jakob Putz,
the regular expression Manfred Lauer mentioned could look like this:
can you please mark the answer that helped you as correct?