How to change ScriptEditor c# icon in Grasshopper?

[Rh-3d-p (R-d)]

Hi How to change ScriptEditor c# icon in Grasshopper?
icon.gh (7.3 KB)
i use this method but Error=Cannot assign to ‘BitmapAsTextureFileReference’ because it is a ‘method group’ [38:5]
@Mahdiyar

  private void RunScript(List<string> x, ref object a)
    {
    Component.Icon_24x24.BitmapAsTextureFileReference=x[0];
        a = null;
    }