color code example not working

[Marietaa]

I saw example in "JavaScript for Acrobat API Reference" to change text color depending on value, but I can't get it to work, I tried it in validation and in calculation but it doesn't work. What am I doing wrong? Here is code example:

[Bernd Alheit]

In the second line use

f.textColor = ...

[Marietaa]

First let me just ask is that just typing error in "JavaScript for Acrobat API Reference"?

Your suggestion work but if value is negative color should be red right?

EDIT:sometimes if negative color is black if positive red, other times whatever value it's always red.

it's all mixed up, I just don't get it.

[try67]

Yes, it's a mistake in the documentation.

Where did you place the code, exactly? Under what event?

[Marietaa]

I tried in both validate and calculation. When I input code and enter positive value color is black,when input negative color is red but when then go to positive again it stays red.

[try67]

Keep in mind it will only update after you leave the field, as that's when the value is "applied".