Syntax error in a Rich Text Formula

That button is actually quite complex.  You are trying to present two different hyperlinks, each doing a different URL plus a Page Refresh and two different images.  Unless you are a better coder than I am you have no hope of writing it in the syntax you wrote it in. 

You really must break it down into pieces.  Yes it will be a lot longer formula, but its really just a lot of Copy and Paste.

This tested OK and is easy to read and hence to debug.

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var text RefreshPage = URLRoot() & "db/" & Dbid() & "?a=doredirect&z=" & Rurl();

var text UnToggleURL = URLRoot() & "db/" & Dbid() & "?a=API_EditRecord&rid=" & [Record ID#]
& "&apptoken=dwh245kc9bvrzfcqkqfwmd876gjx"
& "&_fid_35=0";

var text ToggleURL = URLRoot() & "db/" & Dbid() & "?a=API_EditRecord&rid=" & [Record ID#]
& "&apptoken=dwh245kc9bvrzfcqkqfwmd876gjx"
& "&_fid_35=1";

var text UnToggleRefresh =
$UnToggleURL
& "&rdr=" & URLEncode($RefreshPage);

var text ToggleRefresh =
$ToggleURL
& "&rdr=" & URLEncode($RefreshPage);


var text UnreadImage = "<img src=https://images.quickbase.com/si/16/018-email_unread.png>";

var text ReadImage = "<img src=https://images.quickbase.com/si/24/016-email_0.png>";

var text UnReadHyperlink =
"<a href=" & $UnToggleRefresh & ">" & $UnreadImage & "</a>";

var text ReadHyperlink =
"<a href=" & $ToggleRefresh & ">" & $ReadImage & "</a>";


If([Sent Checkbox], $UnReadHyperlink, $ReadHyperlink)

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Mark Shnier (YQC)
Quick Base Solution Provider
Your Quick Base Coach
http://QuickBaseCoach.com
mark.shnier@gmail.com
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