Basic question: Toggle Presets within single button?

Hello All...

Just got the MC6 to control my GFI Spec Tempus. I have 2 presets on the Tempus - Patch A Reverb, Patch B Delay. I would like to switch between the 2 patches with a single button on the MC6 (button A).

I have set up the MC6 as the following:

Toggle setting on.

Provided a short name (Reverb) & a toggle name (Delay).

Msg1 - Press. Program change (0) Pos: 1

Msg2 - Press. Program change (1) Pos: 2

For each press of preset A the PC command is sent correctly to the Tempus and the patch on the Tempus changes but the patch names do not reflect the preset selected.

Any guidance would be most appreciated!!!