Is there a way to create a condition that counts the number of characters on a line.
So that when there are less than 20 the condition is true, above 21 its false.
Off course with trimmed spaces

Mario,

You can use this condition:

The "variable" can be any string variable or value. If it's 20 characters or below, it will be true, otherwise it will be false.

Regards,
Rapha

Can i just copy this in the condition line on my data selection or how?

You can either put it directly in the condition line of your data selection, or create a condition and add the condition itself to the data selection (this way if your condition changes, it'll be easier to find)

Eric.

I have some problems getting it work right.

I have a data selection on line 1,1,30.
If there are more than 20 charachters on this line the condition must become false.

How must i use this code you gave me?

if i copy this into my condition line it gives some errors.

Mario,

Are the characters seperated by spaces? length() only work to check the total number of characters including spaces in a string. You can use either trim() or strip() to remove the spaces, depending on that data:
Assuming you've created a condition with type "advanced", paste one of the following in your "Advanced Condition" box:

Using TRIM:
=length(trim(@(1,1,30))) <= 20
OR using STRIP:
=length(strip(' ', @(1,1,30))) <= 20

Thanks those 2 rules (strip and Trim) are just what i was looking for!!

thank you!