Image Effects and HSIC mode S4 LEDs

Hi All,
I'm trying to get Image Effects working for Source 4 Leds (Series 1 & 2).
The S4 units are set in HSIC mode as that works best for us currently. But when I set an image effect that works fine on RGB LED Pars to operate the S4 LEDs, they don't change colour.
Do Image Effects work on the S4 LED products, or is it that the Image effects don't work in HISC (or Direct mode) for any non RGB unit?

 

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