Setting a required field based on a dropdown selection

Question

So I've seen a few similar topics but nothing I've been able to try/modify that fit what I need so hoping someone can help me fix this:

I have a dropdown menu with 7 options
2 of the 7 options need to make a separate text field REQUIRED
If any of the other 5 options are selected the separate field text remains OPTIONAL
To try to simplify this I set the Export Values of the 2 required items to REQ and the remainder to X

Here's what I have so far:

var spod = this.getField("Dept");

if (event.value=="Req") {

spod.required = true;

}

else if (event.value=="X") {

spod.required = false;

}

but each time I select either of the req options the dept field doesnt change. What am I doing wrong?

Nesa Nurani · Accepted Answer

sorry to clarify the field is titled SpoDoM but I changed it to target in my stripped out version. I didn't realie I missed that one so can you clarify where that was? Specifically where I should put that second code. I can add a revised version if that helps

Use script in Dropdown field under 'Validate' tab → 'Run custom validation script'.

If the field name is "TARGET" then just replace "SpoDoM" with "TARGET":

var target = this.getField("TARGET");
target.required = event.value == "Req" ? true : false;
target.readonly = event.value == "Req" ? false : true;

If you still have trouble, please share your file.

Nesa Nurani · Answer

Since you set export value you need to use script as calculation not validation.

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