Write a simple Routine which Play a Synth and stops him after a short Time

Dear Community,
I kenw this is a sily Question but why write I a Simple Routine or Function which does the following.

1.) Play a Synth
2.) Wait a time of n Seconds
3.) Stops the Synth

The Function must been called from a OSCFunc and must allow to bee multiple times called simulatious.

A
ComputerArtist_ThL

Which can not figure out this simple Question

Dear Community,
I think this is a clear use of the selffree in a SynthDeff.

Excause my stupid Question.