>>Never mind, stupid joke from my part again. You missed a space in that sample between [] and the field name.
>
>Oh, yes you are right, did not noticed it. You might have noticed that I updated the message and that was the thing I changed from my original post, as after re-reading I noticed that I had left that expression untouched, which was wrong, and then tried to quickly patch it, leading to the error, sorry about that Jay

See my response to Nadya. That was not causing an error, oddly. It was something entirely different.