Hi, I have an xmod form

It has a check box list:

<select ref="ClassOfCar" appearance="full" repeatdirection="vertical" repeatlayout="flow" required="true">

<items>

<item>

<label>Race car</label>

<value>1</value>

</item>

<item>

<label>Other</label>

<value>1</value>

</item>

</items>

</select>

<input ref="OtherClassOfCar" class="OtherTextBox" required="true" ></input>

So what I have is the input text box is a required field. However I actually wanted it to make it so

the field is only required it the "Other" checkbox is checked. Otherwise it is not required.

Can someone please tell me how to get this conditional compilation working?