Using SetMixParam() to Select a Bus?

Hi,

In control surface code, one can use:

SetMixParam( MIX_STRIP_TRACK, 0,MIX_PARAM_SELECTED, 0, (float)<desired track> MIX_TOUCH_NORMAL);

To Select a track but:


SetMixParam( MIX_STRIP_BUS, 0,MIX_PARAM_SELECTED, 0, (float)<desired track> MIX_TOUCH_NORMAL);

And or

SetMixParam( MIX_STRIP_ANY, 0,MIX_PARAM_SELECTED, 0, (float)<desired track> MIX_TOUCH_NORMAL);

Don't seem to want to select a bus.

Sonar seems to just ignore me as if this operation is not supported or I am going about it incorrectly.

Any help would be appreciated.

Ron