Your XML file is encoded in UTF-8. Hence, any non-ASCII character will be written as two, perhaps three, bytes.
In particular, "Á" and "Í" are encoded as 0xC3 0x81 and 0xC3 0x8D respectively. To a non-Unicode application like Workflow, this would look like "Ã" followed by a space... or no space, since 0x81 and 0x8D are undefined in Windows 1252.
I would suggest that you use Notepad++, more specifically the Encoding menu, to figure out which byte combination matches which character.
You could also convert your XML file to an encoding supported by Workflow, such as Windows 1252, using the Translator plugin and then process your file.
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Yannick Fortin, Team OL