I'm not shure I understood what you want
You can type "\n" in your text for a new line (but I'm not shure this works).
You could also check the length of your string and split it in smaller sections. str_len(string) if > 10 than copy the string into a new one , clip 10 characters from the first string , trunc (str_len - 10) from the second string. You get the rest of the text in the first string , and the first line of text in the second string. Repeat the process for more strings.