They are used when advanced OSC routing capabilities are needed. Variables are events that store a value in a temporary place, and later use that value in a OSC Routing event.

They are useful when a OSC message needs to be constructed from different non-homogeneous values.

The first step is to assign the Variables event to a message argument. There are 16 different variables that can be assigned, and they are numbered from 0 to 15.

Here the Variable 0 will store the last value sent by the OSC messages /1/fader/1 and the Variable 1 will store the last value sent by the message /1/fader/2.

These variables are then used in an OSC Routing event. Here is an example of such event in the OSC Editor, where the Variables 0 and 1 are composed in a message named /faders.

This event can then be assigned for example to the /1/push1 OSC message. Therefore, every time the message /1/push1 is received, OSCulator will send the /faders message along with two arguments being the last values received from the /1/fader1 and /1/fader2 messages.