How can I have a dependent attribute that auto-populates?

I’m using an http filtered value set to provide values to two attributes.  attribute1 and attribute2, attribute2 is dependent on attribute1.  Based on the value selected in attribute1, I need attribute2 to auto-populate.

Using the following xml for example, if I select “one” in attribute1, attribute2 needs to change to “A”

<attribute1 value=”one”>

                <attribute2>A<attribute2>

</attribute1>

<attribute1 value=”two”>

                <attribute2>B<attribute2>

</attribute1 >

Currently I have to manually select the value in attribute2.  This is a hassle when I have multiple attributes that are dependent on attribute1 and need to auto-populate.

If I had the option of using HTTPConnector in a calculated value script I think I could get the functionality I’m looking for. But it looks like you can only use HTTPConnector with a script based value set.

How can I open an enhancement request of this issue?

Thanks,

Dan