HTML entity decoding with oracle DBMS_XMLGEN.convert Here, I am trying to convert the value, where I don't understand I am going wrong. Your help is highly appreciated!

Here I am#44; THis is me there#39;s nowhere else on earth I rather be Here I am#44;


to 

Here I am, THis is me there's nowhere else on earth I rather be Here I am,


For this I used the following query which didn't work, Can you please tell me where I am wrong?

select DBMS_XMLGEN.convert(REGEXP_REPLACE('Here I am#44; THis is me there#39;s nowhere else on earth I rather be Here I am#44;', '(#[[:digit:]]+;)','&amp;\1'), 1 ) as message from dual;
Here it is 

WITH x AS (SELECT DBMS_XMLGEN.CONVERT(REGEXP_REPLACE('Here I am#44; THis is me there#39;s nowhere else on earth I rather be Here I am#44;', '(#[[:digit:]]+;)','&amp;\1'), 1 ) AS message FROM dual) SELECT message, UTL_I18N.UNESCAPE_REFERENCE(message) conv_message from x;