Did the transaction run when you execute the webpage? You can check this in MII's Transaction Manager screen. If you find your transaction listed there, then it means your BLS logic was executed but the output was not displayed. I would check the following
1. Check if the output parameter in the URL is correct. I am not sure, but I guess its case sensitive
2. I would try changing the content-type to text/html
3. If none of these work, I would open the web page in the Google chrome, I would open the console (F12) and see if I get an error there. Check if there is a 404/401/500 error. If yes, check the url /credentials.
4. No error means more confusion Image may be NSFW.
Clik here to view.
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hit and trial : , change the output parameter type to string or Just pass HELLO WORLD from the transaction as output. Check if that prints. Make sure the output param is same as that declared in transaction.
