Hey..I'm glad you like it :)

Those text labels are just for debugging to know why a signal was cancelled.

And since they are text they needed to be objects. Buffers would only have supported arrows or wingdings symbols based on arrow codes etc.

Right now I don't think mql4 supports text as buffer values.

And, even if I gave each type of error a number, that would be difficult for users. I need it to be visually clear on chart. With options to turn it on/off.

Yes, it could have been both.. numbers for buffers and text for labels, but I don't see the point for adding any overhead.

So, I don't really plan on adding those to buffers.. sorry :))