Shaper Orb Sound Issue (Filter Sounds i.e. ShRegal)

Hello, I cannot seem to get an item filter working with the shaper sounds in game. Are they currently bugged or is there something specific I need to do to get them working? Below is a snippet of my code specifically regarding regal orbs, but all of the Sh sounds are not working for me.

Class Currency
SetTextColor 8 242 255 255
SetBackgroundColor 33 0 31 255
SetBorderColor 0 255 205 255
SetFontSize 45
MinimapIcon 2 White Circle
PlayEffect White
BaseType "Regal Orb"
PlayAlertSound ShRegal 300