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I have multiple numerical inputs, but I want one of them not to exceed 49? How can I do this? 
Thank you in advance!

www.limesurvey.org/manual/Question_type_...28em_validation_q.29

Q00_SQ020.NAOK lt 49 OR is_empty(Q00_SQ020.NAOK)

I tried implementing the code in question validation equation but it does not seem to work. Since this is my first time working with limesurvey code could you tell me where to implement it and how?
Thank you!

The place "question validation equation" is correct.

I hope you adapted the code to your design.

Anyway: Without seeing what you did, it is hard to help.
So please, show how you edited the subquestions, and the entry in the validation. (screenshot)

Joffm
 

I tried putting like it was and just changed the codes to adapt it to my question but as you si it is not correct. This is all new to me. I hope I am not acting too dumb lol.

Please : check the Question logic file and send a screenshot.

Here : you don't show your subquestion etc …

And put something in question validation equation tip : it's more clear when you test.

What should I put on the 'Question validation tip'?

but as you si it is not correct. 

Why do you think it is not correct?
Because of the red underlining?
This only means it is not a correct English word. There is no English word "is_empty" (with underscore).

But what about your regex validation?

Joffm

 

I mean it is not correct because it does not . I have put this /^[1-9][0-9]?$|^100$/ at general in the input validation.

> I mean it is not correct because it does not

How do you think it's not correct ?

About tip : just put anything to have a javascript reaction : to see if it's correct,when it's OK or not .

And WHY use regexp on numeric question …

Just put max value to 100 and min value to 0.

Thank you it worked now! I just couldn't display the message properly on the tip.

{if((G1Q00009_3.NAOK lt 50 OR is_empty(G1Q00009_3.NAOK)),', 'NUK ËSHTË E MUNDUR TË VENDOSET NJË NUMËR MË I MADH SE 49.<br/>')}

I placed the above code on Question validation tip and the whole code is displayed on the question not only the sentence I want to.

I also fixed the tip. Thank you all for your feedback.

Then : it work before too but you doind't see it …

Else in place of your regexp :
www.limesurvey.org/manual/Question_type_...8em_validation_sq.29

(is_int(this.NAOK) and this.NAOK ge 0 and this.NAOK le 100) OR is_empty(this.NAOK)