I need to set a minimum number of characters or words in my questionnaire. I have chosen a long text box, and I have set the maximum number of characters to 1800, and I would like to set the minimum to 1000 characters (or the minimum to 200 words and the maximum to 300 words).

I used several regular expressions, but I don't know where to type them (conditional filter equation, or question validation equation). I tried :

{ ^[-\w]+(?:\W+[-\w]+){199,200}\W*$} --> syntax not recognized by LimeSurvey

{strlen(this) > 1000} --> seems not to work even if syntax is recognized

{^.{200,}$} --> syntax not recognized

I'm stuck at this point. Could someone explain to me where exactly I should enter the regular expression, and which one is the right one to limit the number of characters or words?

Thank you

If using a regular expression in the "Question validation equation" field, you need to use the regexMatch() function - manual.limesurvey.org/ExpressionScript_-...#Access_to_functions

Additionally, you do not use the curly braces in that field.

Thank you for your answer ! Now do you know which expression would set a minimal number of characters or words? I can't find the right one.

This should work, if you place it in "Logic/question validation equation"
and remove the curly brackets
strlen(self) > 1000

Disadvantage: The question will show an error until you typed 1000 characters.

Joffm

You have two conditions
1. length of string ge 1000 characters
2. length of string le 2000 characters

So you have a validation equation of
strlen(Q1.NAOK) ge 1000 AND strlen(Q1.NAOK) le 2000

And in the validation tip you may create something like
{if(strlen(Q1.NAOK) lt 1000,"Please enter at least than 1000 characters",if(strlen(Q1.NAOK) gt 2000,"Please enter less than 2000 characters","That's fine"))}
Or whatever you like.







Joffm

Thanks a lot, it's been very helpful. Everything works now, except the fact that I still can't display the number of characters the participant is at. On the pictures that you posted, there's a text at the bottom of the box saying "Your text contains ... characters". How can add this?

Sorry about the double post, I'm new here and didn't know best.

Hi,
well, I put it into the help text.
But you may put it into the question text as well.

Read about it here
manual.limesurvey.org/ExpressionScript_E...e#Tailoring.2FPiping
Tayloring and piping is very important feature to create a participant friendly questionnaire.

Your text contains {strlen(self.NAOK)} characters.

Joffm

Thanks you Joffm, in the help text I used :

You have entered {strlen(self.NAOK)} characters of {if(strlen(self.NAOK) lt 1000,"a minimum of 1000",if(strlen(self.NAOK) gt 2000,"a maximum of 1800","in between 1000 and 1800 characters"))}

It all seems to work now.

Best regards