Kasheeda Justification on selected character / text only

I am trying to achieve to put Kasheeda on selected character only. In fact, I ahve kasheeda enabled in paragraph style. Some characters are not looking good in kasheeda so I thought of removing kasheeda from that characters or use some other kasheeda. Indesign gives an option. If I change kasheeda from drop down, it changes in the whole paragraph and not the selected characters.

Is there a way to achieve that using script or Character styles ?

Here is the text

اسمہ اسلام اباد، یایہا الناس اجتنبوا الكذب

Here is the code I have written to apply character style BUT I do not know how to control that drop down.

I have attached a screenshot and IDML file also.

Here is the code written to apply character style:

var characterStyleName = "Kasheeda";
var mySelection = app.selection[0];
    if (mySelection.length == 0) {
		 alert("Please select some text first.");
	}
	else {
        // Check if the character style exists in the document
        var charStyle = doc.characterStyles.itemByName(characterStyleName);
        if (charStyle.isValid) {
		
			//Modify Character Style here to add or remove kasheeda
			
            // Apply the character style to the selected text
            mySelection.applyCharacterStyle(charStyle);
            alert("Character style applied successfully!");
        } 
		else { 
			alert("Character style '" + characterStyleName + "' not found."); 
		}
    }

I have used "body" paragraph style.

In the attached image, say I want to remove kasheeda (marked with red square) of 2 and 3rd box in the text. I want to either make it "none" or "short" or "medium" or "long". It is driving me crazy.

Thanks.