Adding properties with ParagraphStyles.add()

Question

Hi!
I must be misunderstanding how the property "properties" of classes ParagraphStyle and CharacterStyle works. I have a function which looks for text with provided attributes and assigns an existing paragraph style to it. If the requested paragraph style doesn't exist a new style should be created and that's where I'm having trouble. I'd thought I could just write...
app.activeDocument.paragraphStyles.add({
            name: styleName,
            properties: myProperties
...and that the style would be created with all those properties but it doesn't work that way. However if I write
app.activeDocument.paragraphStyles.add({
            name: styleName,
            fontStyle: myProperties.fontStyle
then the right fontStyle gets applied to the new paragraph style, so the values are in the variable myProperties for sure. Any ideas on how to get this workning? See the full function with caller below if you need the context.
applyParagraphStyle("s-heading", {pointSize: 12, fontStyle: "Bold"});
function applyParagraphStyle(styleName, myProperties) {
    app.findGrepPreferences = NothingEnum.nothing;
    app.findGrepPreferences.properties = myProperties;
    var styles = app.activeDocument.paragraphStyles;
    var style;
    var found = app.activeDocument.findGrep();
    try {
        style = styles.item(styleName);
        //try to assign style.name to value to see if an error is thrown
        var n = style.name;
    catch (myError) {
        alert("Couldn't find paragraph style '" + style.name + "'. New style created.");
        style = styles.add({
            name: styleName,
            properties: myProperties
    for (i = 0; i < found.length; i++){
        found[i].applyParagraphStyle(style, false);

Answer 1

Hi,
First:
myProperties supposed to be set like:
myProperties = {prop1: value1, prop2: value2};
Second:
"name" is a property as well. If you want to set it separatelly you should do it in a separate code line;
Finally adding PStyle use:
styles.add(myProperties);
rgds