The problem is that those 4 digit IDs don't appear to be usable in commands as is. The actual station IDs are much longer. The way that I found the correct IDs was to follow our old tried and true method mentioned in various threads here on the forum: I added a Pandoki radio station to my favourites, and then went to check out the Favourites.xml file to see what it said.
From that, I was able to follow the example of a different addon command that I'd figured out for someone a while back to create a command that plays individual Pandoki/Pandora radio stations. (See below.)
I scoured my Kodi files to find somewhere other than the Favourites file that might properly document those IDs to make our payload generation easier, but I had no luck with that. In the commands below, I've included one that allows you to generate a payload XML file from the Favourites file, so you'd have to add all your radio stations to your favourites -- temporarily at least -- in order to do that. Sorry I couldn't come up with a less awkward method.
Note: I'm using the file path for Kodi's favourites file -- if you have an older XBMC installation, you'll want to change the path to XBMC
<?xml version="1.0" encoding="utf-16"?>
<!--VoxCommando 2.1.3.3-->
<commandGroup open="True" name="Kodi Pandoki" enabled="True" prefix="" priority="0" requiredProcess="" description="">
<command id="830" name="Play pandoki radio station {1}" enabled="true" alwaysOn="False" confirm="False" requiredConfidence="0" loop="False" loopDelay="0" loopMax="0" description="I added the action to return to the home screen because I prefer that view, but it's not necessary.">
<action>
<cmdType>TTS.Speak</cmdType>
<params>
<param>Queuing station: {PF.1}</param>
</params>
<cmdRepeat>1</cmdRepeat>
</action>
<action>
<cmdType>XJson.Raw</cmdType>
<params>
<param>GUI.ActivateWindow</param>
<param>"window": "music", "parameters": ["plugin://plugin.audio.pandoki/?play={1}","return"]</param>
</params>
<cmdRepeat>1</cmdRepeat>
</action>
<action>
<cmdType>XJson.Raw</cmdType>
<params>
<param>GUI.ActivateWindow</param>
<param>"window": "home"</param>
</params>
<cmdRepeat>1</cmdRepeat>
</action>
<phrase>Play pandoki station</phrase>
<payloadFromXML phraseOnly="False" use2partPhrase="False" phraseConnector="by" Phrase2wildcard="anyone" optional="False">XbmcPayloads\PandokiRadioStations.xml</payloadFromXML>
</command>
<command id="942" name="Scrape stations from Favourites" enabled="true" alwaysOn="False" confirm="False" requiredConfidence="0" loop="False" loopDelay="0" loopMax="0" description="">
<action>
<cmdType>PayloadXML.Clear</cmdType>
<params>
<param>XbmcPayloads\PandokiRadioStations.xml</param>
</params>
<cmdRepeat>1</cmdRepeat>
</action>
<action>
<cmdType>File.Read</cmdType>
<params>
<param>{Path.Appdata}\Kodi\userdata\favourites.xml</param>
</params>
<cmdRepeat>1</cmdRepeat>
</action>
<action>
<cmdType>Results.Replace</cmdType>
<params>
<param>&amp;</param>
<param>and</param>
</params>
<cmdRepeat>1</cmdRepeat>
</action>
<action>
<cmdType>Results.Replace</cmdType>
<params>
<param>&apos;</param>
<param>'</param>
</params>
<cmdRepeat>1</cmdRepeat>
</action>
<action>
<cmdType>Results.RegEx</cmdType>
<params>
<param><favourite\sname="(.*?)".*?pandoki..play=(.*?)&quot</param>
</params>
<cmdRepeat>1</cmdRepeat>
</action>
<action>
<cmdType>Results.MatchToXML</cmdType>
<params>
<param>XbmcPayloads\PandokiRadioStations.xml</param>
<param>True</param>
</params>
<cmdRepeat>1</cmdRepeat>
</action>
<phrase>Scrape stations from Favourites</phrase>
</command>
<command id="941" name="Go to Pandoki" enabled="true" alwaysOn="False" confirm="False" requiredConfidence="0" loop="False" loopDelay="0" loopMax="0" description="">
<action>
<cmdType>XJson.Raw</cmdType>
<params>
<param>Addons.ExecuteAddon</param>
<param>"addonid": "plugin.audio.pandoki" </param>
</params>
<cmdRepeat>1</cmdRepeat>
</action>
<phrase>Go to Pandoki, Show Pandoki library</phrase>
</command>
</commandGroup>
The addon syntax you originally tried to use does allow us to navigate to the Pandoki plugin's page, which I think is still a useful command to have. But from there we'd have to navigate, press buttons etc. to play each station. That's doable, but it's definitely nicer to be able to ask for specific stations.