Pasting code in htmleditorextender

So I am building an Internal site for our it here and basically they would be able to paste in their script and share with others. I already done the site the only issue im having is for example if I paste in the htmleditorextender texbox a powershell script it just disabled my button. So I figure it's probly for security reason, but in this case i'd like it to just let me paste in code in the textbox.

I ran IE debug and got the error below when click the add script button. My Add script only inserts a record into the mssql database.

IndexSizeError

I am not even sure if it's related.

Thanks