Hey monika , If you are getting line breaks from a String so you need to replace \n then you have to replace \r, let me see you how with a example
Here we have a text file suppose sample.txt now we have to remove all line breaks from this file. See the Code
String strTextFile = readFileAsString("sample.txt");
strTextFile = strTextFile.replace("\n", "").replace("\r", "");
I hope you got my point like the same way you can remove line breaks from your dynamic strings.