Vario - howto only listen to up vspd

[anthropo]

Hello,

Is there a way to hear vario only when plane goes up, not down or stay at the same altitude.

Thank you

[mstrens]

Create a logical switch based on the value of Vspeed (true when Vspeed is > 0)
Thenin special functions, play vario only when logical switch is true.

[anthropo]

thank you