How to change Image color like Channel mixer

Question

Hello everybody
I have this problem can anyone help me:
I want to change Channel mixer color,
for example, change original Image color to B&W.
My code:
docRef.channels[0].color.rgb.red = 30;
docRef.channels[0].color.rgb.green = 59;
docRef.channels[0].color.rgb.blue = 11;
docRef.channels[1].color.rgb.red = 30;
docRef.channels[1].color.rgb.green = 59;
docRef.channels[1].color.rgb.blue = 11;
docRef.channels[2].color.rgb.red = 30;
docRef.channels[2].color.rgb.green = 59;
docRef.channels[2].color.rgb.blue = 11;
But not working in scripting, seems a mistake.
How should I correct this code? Thank you for your help.

Answer 1

Hi Michael,
I try changed 12 parameters in array of num in my js,
doc.layers[0].mixChannels([[30,59,11,0],[30,59,11,0],[30,59,11,0]],false);
doc.layers[0].mixChannels([[30,59,11,0]],true); ------  this way is better than ↑
doc.layers[0].mixChannels([[60,30,10,0],[30,10,60,0],[10,60,30,0]],false);
doc.layers[0].mixChannels([[39,77,19,0],[35,69,17,0],[27,53,13,0]],false);
They would show new color as I wantted,
I forgot ' When monochrome = true, the maximum number of channel value specifications is 1. '
Thank you for your recommendation.