topic Re: Can't Get Arcade to Recognize a New Line in Developers Questions

Can't Get Arcade to Recognize a New Line

CamTurney — Tue, 04 Mar 2025 17:03:23 GMT

I have an Arcade expression for a When() logical for Field Calculator. I am calculating string field based on the values of a numeric field. However, I keep getting the error

"Invalid expression. Error on line 1. Semicolon or new line expected" I cannot figure out why it is not recognizing the semi colon after I identified the numeric field as a variable.

var $feature.percent;
When(percent = 0, 'Not Hydric', percent > 0 && percent <50, 'Non-Hydric with Hydric Inclusions', percent >= 50 && percent < 100, 'Predominantly Hydric', percent = 100, 'Hydric', 'N/A');

Any help is appreciated.

Re: Can't Get Arcade to Recognize a New Line

timcneil — Tue, 04 Mar 2025 17:14:27 GMT

Hi @CamTurney ,

You will need to declare your variable like so:

var percent = $feature.percent;

You can find more info about declaring variables in the documentation here.

For the comparison operators in your When() statement, you will also need to use == to indicate 'equal to'. In your example you only use =.

So the expression should look something like this:

var percent = $feature.percent;
When(percent == 0, 'Not Hydric', percent > 0 && percent <50, 'Non-Hydric with Hydric Inclusions', percent >= 50 && percent < 100, 'Predominantly Hydric', percent == 100, 'Hydric', 'N/A');

Re: Can't Get Arcade to Recognize a New Line

CamTurney — Tue, 04 Mar 2025 18:31:12 GMT

This solved my problem, Thanks!!