Random rnd = new Random((int) DateTime.Now.Ticks & 0x0000FFFF);
string text = project.Variables["text"].Value;
int length = text.Length;
string new_text = String.Empty;
int max = rnd.Next(1, 3);
int curr = 0;

for (int i = 0; i < length; i++) {
    if ((rnd.Next(0, 3) == 1) && (i != 0) && (i != length) && (curr <= max)) {
        new_text += ".";
        new_text += text[i];
        curr++;
    } else {
        new_text += text[i];
    }
}

return new_text;