Since you said, "template", I will assume you are using GTL for this example. Your example is also using a cell header, but the text does not appear to be generated by classification, so I will assume you are using an ENTRY inside of a CELLHEADER block. Your ENTRY statement should look something like this:
entry {unicode '03C1'x} " = 0.338; p < .001" / textattrs=GraphUnicodeText;
You do not need the ODS escape character because entries in GTL support the unicode, sup, and sub escapements outside of quoted strings.
Since you're referencing a character in the "03" range, your default font might not contain that character. If it doesn't, add the TEXTATTRS reference I gave above to use a more full-featured Unicode font.
Hope this helps!
Dan
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