Quotes [""] Replace in script runner

[Maikes]

Dear colleagues from Atlassian community, 

I would like to know how I can replace Double quotes [""], wi script Runner. 

This is an integration problem and I need to Change [""], for the ASCI code in UTF-8, as you can see here. 

code tryed: 

{

Description.replace("\\"", """)
Description.replace("\"\\", """)

}

Regards