Can you rename your wav files to make the names consistent?
e.g. "understood_пятьдесят.wav", "understood_25.wav", "understood_семьдесят пять.wav", "understood_максимум.wav"
?
Then you can use a Payload XML file, with your command like so:
<?xml version="1.0" encoding="utf-16"?>
<!--VoxCommando 2.2.0.1-->
<command id="167" name="Speed" enabled="true" alwaysOn="False" confirm="False" requiredConfidence="0" loop="False" loopDelay="0" loopMax="0" description="">
<action>
<cmdType>DxInput.KeyPress</cmdType>
<params>
<param>{1}</param>
</params>
<cmdRepeat>1</cmdRepeat>
</action>
<action>
<cmdType>Sound.PlayWav</cmdType>
<params>
<param>E:\A.S.T.R.A VoicePack\A.S.T.R.A VoicePack wav\A.S.T.R.A VoicePack\engines thrusters and drives\etd increments\understood_{PF.1}.wav</param>
</params>
<cmdRepeat>1</cmdRepeat>
</action>
<phrase optional="true">Скорость</phrase>
<phrase optional="true">на</phrase>
<payloadFromXML phraseOnly="False" use2partPhrase="False" phraseConnector="by" Phrase2wildcard="anyone" optional="False">payloads\percent_velocity.xml</payloadFromXML>
<phrase optional="true">процентов</phrase>
<phrase optional="true">скорости</phrase>
</command>
See Payload XML file attached