As this is in Splunk Cloud, and I'd like to keep all of the code inline (not worry about external/uploaded javascript, etc.)..I have managed to get the below to work; <fieldset autoRun="false" submitButton="true">
<input type="time" searchWhenChanged="false">
<label>Default (5m realtime)</label>
<default>
<earliest>-5m</earliest>
<latest>now</latest>
</default>
</input>
<input type="dropdown" token="instance" searchWhenChanged="true">
<label>Instance</label>
<choice value="prod">US</choice>
<choice value="test">EU</choice>
<default>prod</default>
<change>
<condition match="match(value, "test")">
<set token="country">https://www.EU-option.foo.bar.edu/image.png</set>
</condition>
<condition match="match(value, "prod")">
<set token="country">https://www.US-option.foo.bar.org/image.png</set>
</condition>
</change>
</input>
</fieldset>
<panel>
<html>
<img src="$country$"/>
</html>
</panel> Thanks to everyone that responded.
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