The difference is that one uses a comma separator:
{EQ \o (~,m)}
whereas the other uses a semi-colon separator:
{EQ \o (~;m)}
For Canadian English, the first version should work just fine. I suggest you copy the field code text that is between the braces, then paste it into the braces you create in your own document, deleting any spaces before/after the field code text.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]