do not insert this line of code into the page,
You need to edit the code created in the Insert Record server behavior.
Double click the insert record server behavior. Select the column that the HTMLEditor content is being stored in.
the value section will show code similar to:
<?php echo((isset($_POST["country"]))?$_POST["country"]:"") ?>
the name of the form element will be different. edit that code to include the str_replace functions:
<?php echo((isset($_POST["country"]))?str_replace("<br>", "<br />", $_POST["country"]):"") ?>
don't change the name of the form element though.