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Sample project which demonstrates use of a number variable, with custom actions to set the volume of a Yamaha amplifier with IP commands. The number is linked to a gauge, so that when the user slides the gauge, the number is changed, hence the custom action is sent, which includes the value of the gauge within it, using [ ] to embed the current value of a variable within a command.

Also, using the 2-way feedback pattern,the current volume feedback from the amplifier is sent to the number, which in turn links to the gauge.