How do I add and remove text in a text field with a checkbox?

Question

How do I add and/or remove text in a text field with a checkbox?
this is my script in the text box......
event.value="Hello, this is my narrative. \r\n\nFamily: \r\n\n" + this get.Field("FirstName").value + " " + this.getField("LastName").value + was born on"=this.getField("DOB.value + "\r\n\n + this.getField("drpField").value + "\r\n\n" + this getField("Father").value
The text box looks like this...
Hello, this is my narrative.
FAMILY:
John Smith was born on 08/02/2000
Boby Lou
Jack Smith
I need to add/or remove the father field (Jack Smith) & r/n/n with a check box.
Does anyone know how to do this?

Answer 1

There are multiple errors in your code...
Use this code instead (adjust the name of the check-box):
var msg = "Hello, this is my narrative. \r\n\nFamily: \r\n\n" + this get.Field("FirstName").value + " " + this.getField("LastName").value + was born on" + this.getField("DOB.value) + "\r\n\n" + this.getField("drpField").value;
if (this.getField("FatherCheckBox").value!="Off")
     msg += "\r\n\n" + this getField("Father").value;
event.value = msg;