Trying to add a formula to a saved search custom email. Following SA Customizing Saved Search Email Content, it says to "_Use the syntax <%=formula%> to add formulas to the text. Formulas can include {fieldID} references_". However I'm using this and getting the

ERROR: Invalid Expression

error. Here's what I've tried (they all error):

{%{fieldid}%}
{%={fieldid}%}
{%= {fieldid}%}
{%=formula {fieldid}%}

I have no idea what I'm overlooking

hey, maybe don't gloss over the syntax saying use angled brackets, not curly brackets... I even copied the correct syntax into my question... facepalm