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The spot colour is based on a Lab model colour book:
Conversions use colour management (Edit > Colour Settings), in this case your working CMYK profile, rendering intent etc.
Press the "Picker" button to change from the default Lab colour build and type in your required CMYK values:
Then when you merge your spot channel to CMYK in Photoshop you will get the overridden value:
Hello, sorry, but I didn't understand ANYTHING that I should do in the Edit > Colour Settings menu
I have it like this -
 
What SPECIFIC profile should I set so that CMYK is exactly as I set it via Picker?
Show me, please.
I don't need conversion via profile, I want to set my own numbers for pantone
By @Gennady36741311vv21
You do what I showed you to do in the screenshots in my very first reply. You wish to bypass ICC colour conversions by changing the spot colour definition from Lab to CMYK using your preferred values.
Hello, sorry, but I didn't understand ANYTHING that I should do in the Edit > Colour Settings menu
By @Gennady36741311vv21
You don't do anything there. Follow the first 2 screenshots that I posted.
I was simply explaining how Lab to CMYK works, you wish to manually redefine the alternate colour model from Lab to CMYK.
I get exactly the values ​​that I set in Photoshop 2019 and do not get them in Photoshop 2022.
My color settings in both Photoshops are absolutely identical !!!
How do you explain this?
By @Gennady36741311vv21
Perhaps reset your preferences in v2022 after backing up actions and other presets.
Manually changing the alternate colour values of a spot colour channel to CMYK from their original Lab-based colour book values should bypass colour settings when merging the spot channel to a CMYK document.
As a last resort, you could try the following script on a selected spot channel:
/*
Alternate CMYK Spot Channel Values scriptUI GUI.jsx
v1.0 - 22nd October 2024, Stephen Marsh
https://community.adobe.com/t5/photoshop-ecosystem-discussions/how-to-convert-pantone-in-photoshop-in-the-way-i-need-what-is-my-mistake/td-p/14908470
*/
#target photoshop
// Create the main window
var dlg = new Window("dialog", "Alternate CMYK Spot Channel Values");
dlg.orientation = "column";
dlg.alignChildren = ["fill", "top"];
dlg.preferredSize.width = 300;
// Create main group for CMYK values
var cmykGroup = dlg.add("panel", undefined, "CMYK Values");
cmykGroup.orientation = "column";
cmykGroup.alignChildren = ["left", "top"];
cmykGroup.margins = 20;
cmykGroup.spacing = 12;
// Create grid rows for each CMYK value
// Cyan Row
var cyanRow = cmykGroup.add("group");
cyanRow.orientation = "row";
cyanRow.alignChildren = ["left", "center"];
cyanRow.spacing = 5;
var cyanLabel = cyanRow.add("group");
cyanLabel.preferredSize.width = 60;
cyanLabel.orientation = "row";
cyanLabel.alignChildren = ["left", "center"];
cyanLabel.add("statictext", undefined, "Cyan:");
var cyanInput = cyanRow.add("edittext", undefined, "");
cyanInput.preferredSize.width = 50;
// Magenta Row
var magentaRow = cmykGroup.add("group");
magentaRow.orientation = "row";
magentaRow.alignChildren = ["left", "center"];
magentaRow.spacing = 5;
var magentaLabel = magentaRow.add("group");
magentaLabel.preferredSize.width = 60;
magentaLabel.orientation = "row";
magentaLabel.alignChildren = ["left", "center"];
magentaLabel.add("statictext", undefined, "Magenta:");
var magentaInput = magentaRow.add("edittext", undefined, "");
magentaInput.preferredSize.width = 50;
// Yellow Row
var yellowRow = cmykGroup.add("group");
yellowRow.orientation = "row";
yellowRow.alignChildren = ["left", "center"];
yellowRow.spacing = 5;
var yellowLabel = yellowRow.add("group");
yellowLabel.preferredSize.width = 60;
yellowLabel.orientation = "row";
yellowLabel.alignChildren = ["left", "center"];
yellowLabel.add("statictext", undefined, "Yellow:");
var yellowInput = yellowRow.add("edittext", undefined, "");
yellowInput.preferredSize.width = 50;
// Black Row
var blackRow = cmykGroup.add("group");
blackRow.orientation = "row";
blackRow.alignChildren = ["left", "center"];
blackRow.spacing = 5;
var blackLabel = blackRow.add("group");
blackLabel.preferredSize.width = 60;
blackLabel.orientation = "row";
blackLabel.alignChildren = ["left", "center"];
blackLabel.add("statictext", undefined, "Black:");
var blackInput = blackRow.add("edittext", undefined, "");
blackInput.preferredSize.width = 50;
// Checkbox for merging the spot channel
var mergeCheckbox = dlg.add("checkbox", undefined, "Merge the selected spot channel");
// Create button group
var buttonGroup = dlg.add("group");
buttonGroup.orientation = "row";
buttonGroup.alignChildren = ["right", "center"];
buttonGroup.alignment = ["right", "top"];
var cancelButton = buttonGroup.add("button", undefined, "Cancel");
var okButton = buttonGroup.add("button", undefined, "OK", { name: "ok" });
// Add button click handlers
cancelButton.onClick = function () {
dlg.close();
};
okButton.onClick = function () {
try {
if (!app.documents.length) {
alert("No active document found.");
return;
}
var activeDoc = app.activeDocument;
if (!activeDoc.activeChannels.length) {
alert("No active channel found.");
return;
}
var activeChannel = activeDoc.activeChannels[0];
if (activeChannel.kind !== ChannelType.SPOTCOLOR) {
alert("The active channel is NOT a Spot Color channel!");
return;
}
var idset = stringIDToTypeID("set");
var desc371 = new ActionDescriptor();
var idnull = stringIDToTypeID("null");
var ref28 = new ActionReference();
var idchannel = stringIDToTypeID("channel");
var idordinal = stringIDToTypeID("ordinal");
var idtargetEnum = stringIDToTypeID("targetEnum");
ref28.putEnumerated(idchannel, idordinal, idtargetEnum);
desc371.putReference(idnull, ref28);
var idto = stringIDToTypeID("to");
var desc372 = new ActionDescriptor();
var idcolor = stringIDToTypeID("color");
var desc373 = new ActionDescriptor();
// Use values from input fields
var idcyan = stringIDToTypeID("cyan");
desc373.putDouble(idcyan, Number(cyanInput.text));
var idmagenta = stringIDToTypeID("magenta");
desc373.putDouble(idmagenta, Number(magentaInput.text));
var idyellowColor = stringIDToTypeID("yellowColor");
desc373.putDouble(idyellowColor, Number(yellowInput.text));
var idblack = stringIDToTypeID("black");
desc373.putDouble(idblack, Number(blackInput.text));
var idCMYKColorClass = stringIDToTypeID("CMYKColorClass");
desc372.putObject(idcolor, idCMYKColorClass, desc373);
var idspotColorChannel = stringIDToTypeID("spotColorChannel");
desc371.putObject(idto, idspotColorChannel, desc372);
executeAction(idset, desc371, DialogModes.NO);
if (mergeCheckbox.value) {
executeAction(stringIDToTypeID("mergeSpotChannel"), undefined, DialogModes.NO);
}
dlg.close();
} catch (e) {
alert("Error updating color: " + e);
}
};
// Show the window
dlg.show();
https://prepression.blogspot.com/2017/11/downloading-and-installing-adobe-scripts.html
ok, i fixed the script
look at this:
point 1
 point 2 (result)
 
Question: where is my 100-0-100-0?
Reset settings? I don't know how to do this...
By @Gennady36741311vv21
Google it or search these forums... There's a button in Preferences/Settings general.
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