Custom Slot Synonyms - IF Statements

It seems one should be able to set up synonyms for a main slot value, then use the main slot value in an IF statement. Trying this, and it doesn’t seem to work. Having to set up IF statements for each synonym. Is there a way to achieve this? New to this, so thanks in advance for your patience.

II’ve seen some posts in Voiceflow’s official Facebook group and seems there are bug in Voiceflow’s prototype testing and if you use “expression” in IF block, it may not work. So you should test it on Alexa Developer Console. I remember they said it should work on ADC.