How to change the color of the field to gray when other form field is filled.

[Nakamoto2405494330rv]

Halo to whoever can help.

Sorry for my bad English writing. I am neither native in English nor good at javascript.

I just have learned how to make the form field colored in gray if it is blank with the below script.

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event.target.fillColor = (event.value=="" || event.value=="BLANK") ? color.gray : color.white;

And now I want to know how I can make the B field colored in gray if the A field has input with the answer I'm looking for and also if the B field is blank. Below is the script I tried but it did not work.

var user = this.getField("使用者本拠地").Stringvalue;

user.fillColor = (user.value=="　　　　　　　　　　　　 他") ? color.gray : color.white;

Thanks in advance for your help!

Nakamoto