Is flexicapture good for capturing data in different positions in untagged PDF?

Hello friends, a question please;

I would like to capture invoice data in pdf format, the problem is that they are not tagged pdf and also, for example, the “total amount of the invoice” can appear in different positions on both the first sheet and the second sheet.

Likewise, if I have 20 suppliers, the date format and locations of the most important data are in different positions.

I have read that with flexycapture you can train with a set of invoices to be able to achieve what I am proposing.

But I have not seen much information in the forum about the use cases or success stories of this tool. Someone knows something about it?

Finally, could someone tell me what the error rate is when using this type of tool for the case I am proposing.