Hi,

Have a look the [select 1] object. It does exactly what ou want.
Ch.

here’s the way you’d do it with the if object, just for your reference:

if $i1==1 then bang

what’s this $i1 business?
$ < - marks beginning of input variable
i < - input variable is integer (f for float, s for symbol/string)
1 < - this argument comes in the first inlet