Welcome to TVPaint Community forums !

Hi~
I use freehand fill tool often. so I want to make a icon in Tool Bin.
But I don't know how to command for adjusting opacity value.

Example of type script's command,
tv_Pen size

Please, tell me command to adjust opacity value or other ways easily.

[/img]

You can adjust and use the density curve.
Add these lines for a density of 60/255:

tv_DensityOn
tv_DensityLineX 0 60 255 60
tv_DensityModeX Max
tv_DensityModeY None

Line 1 : activate the Density profile.
Line 2 : draw a line from 0 to 255 with value 60
Line 3 : Apply the density in uniform mode along X
Line 4 : Don't care of Y

as exemple, I have quickly done a CP with 4 preset buttons
and posted it in the contents sharing section.
feel free to upload it, tweak it and use it, without moderation.

Thanks to ZigOtto, Manuel
My work will progress well.
I appreciate your help.