Your code will work fine. They will be phasing out the ability to create new fields of this type, but existing fields will not be affected. The now delayed March release has a native replacement.
https://help.quickbase.com/release-notes/march-2021-release-notes.html
Formula URL and rich text can now redirect to where a user started
Previously, builders had to pre-define a location for their formula buttons to redirect to, or first redirect to a custom code page. Starting in this release, a new URL pattern is available to redirect an end user to where they started. For example,
URLRoot() & "db/" & [_DBID_SUB_TASKS] & "?a=API_AddRecord"&"&rdr="&URLEncode( URLRoot()
& "db/" & Dbid() & "?a=doredirect&z=" & Rurl())
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Mark Shnier (YQC)
Quick Base Solution Provider
Your Quick Base Coach
http://QuickBaseCoach.commark.shnier@gmail.com
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